Ultralight Space. Superior Ventilation. Fast & Simple Pitch.
The Cirq Trekking Pole Tent is engineered for backpackers who want maximum usable space, exceptional airflow, and reliable wet-weather performance—without carrying extra weight. Designed with a longer floor length, taller peak geometry, and our advanced 2.Flo Ventilation System, the Cirq delivers comfort and protection for demanding backcountry conditions.
At just 1 lb 13 oz (including guylines & stuff sack, stakes not included), the Cirq is a true ultralight trekking pole shelter that refuses to compromise on livability.
Ideal For
- Ultralight backpacking
- Thru-hiking
- Alpine & high-humidity environments
- Taller backpackers seeking better fit
- Fastpacking & minimalist setups
Performance-Driven Features
✔ Trekking pole-supported design (lighter & more packable)
✔ 8” bathtub floor walls for splash & runoff protection
✔ Hybrid no-see-um mesh / breathable solid interior
✔ Large, easy-entry mesh door (angled pole geometry)
✔ 85 cm / 33.5” vestibule depth for gear storage
✔ Single internal pocket for essentials
✔ Internal hanging loops at both peaks
✔ Easy entry/exit mesh door - angled pole design creates larger door opening
✔ Peak Guylines provide additional stability and a storm-worthy pitch
✔ Catenary cut fly keeps the entire tent more taut & enables an easier pitch
✔ Lineloc 3 tensioners at all stake-out points
Technical Specifications
- Weight: 1 lb 13 oz (with guylines & stuff sack)
- Peak Heights: 53” / 44” (135 / 112 cm)
- Floor Dimensions: 91.3” × 28” (232 × 71 cm)
- Vestibule Depth: 33.5” (85 cm)
- Fabric: 15D Nylon / 50D Polyester Sil/PeU Ripstop
- Waterproofing: 2,000 mm HH
- PFAS free
- Warranty: Outdoor Vitals Performance Promise
Care & Cleaning:
The Cirq Tent is a high-performance piece of equipment. Improper care & storage of the tent could result in premature degradation of it's performance.
Storage
- Dry completely before storage. Never store wet or damp.
- Remove dirt, sand, and debris before packing.
- Store loosely in a cool, dry place out of direct sunlight.
- Avoid prolonged UV exposure when not in use.
- Keep away from heat, flames, and hot surfaces.
Cleaning
- Shake out dirt and debris before cleaning.
- Turn inner tent inside out to remove trapped dirt.
- Rinse with clean water or wipe with a damp cloth.
- Use mild soap only when necessary.
- Do not use detergent, bleach, or solvents.
- Do not machine wash or dry.
On Trail Repairs
- Avoid sharp objects and rough surfaces.
- Patch small holes with sil nylon repair tape or fabric patches.
- Apply seam sealer if seams begin to leak.
- Use only adhesives safe for coated nylon / poly fabrics.
Cirq Tent Pitching Instructions
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Stake out all four corners of the tent body (leave guy lines relatively loose.)
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Insert trekking pole set to approximately 44 inches in the rear vestibule with the point toward the ground (point should pass through the metal grommet at the base of the tent.) The grip should be in the cone at the peak of the tent.
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Stake out the rear vestibule with enough tension to keep the trekking pole upright
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Insert your other trekking pole (set to approximately 53 inches) into the front vestibule & stake out the vestibule.
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Connect peak guylines to the vestibule stakes and tension all four corners + vestibules to create a taut structure.
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Adjust individual guy lines (both loosening and tightening) to remove wrinkles and balance tension as necessary
2.Flo™ Ventilation System:
This is our most effective tent ventilation system yet, and uses multiple airflow paths working together to help reduce condensation within the tent.
- Full-width ridge ventilation
- Perimeter airflow around the entire fly
- Intentional vestibule heights that maximize airflow while offering full protection from the elements.
Why Condensation Happens In Ultralight Tents
Before explaining 2.Flo™, it helps to understand why condensation happens so easily in lightweight shelters.
Every night, your body releases moisture through breathing and perspiration. In a small enclosed tent, that moisture builds up quickly. When warm humid air hits the colder tent fabric, it condenses into water droplets.
Ultralight tents often make this worse because they tend to have:
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Low interior volume
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Limited venting
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Tight wall clearance
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Minimal airflow
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Fabric that sags when wet
When the air inside the tent can’t circulate, moisture has nowhere to go.
That’s exactly what the 2.Flo™ system was built to reduce.
Full-Width Ridge Vents
The Cirq uses full-width ridge vents on both sides of the tent, located at the highest point of the shelter where warm, moist air naturally rises.
This allows humid air to escape instead of collecting at the ceiling.
Because the vents run across the ridge rather than being small openings, they allow more air to move without requiring the door to be open.
Benefits of ridge ventilation:
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Releases warm humid air before it condenses
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Improves airflow even in light wind
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Works in cold conditions without opening the tent
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Maintains weather protection while venting
Full Perimeter Airflow
This creates natural convection flow through the shelter.
Why Interior Space Matters for Ventilation
A larger interior volume reduces how quickly humidity builds up.
More space means:
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Less moisture concentration
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Less contact with tent walls
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Easier airflow
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More comfortable sleeping
In many ultralight tents, condensation feels worse simply because the walls are closer to your face.
The Cirq’s geometry helps prevent that.
NP Shield™ Fabric
This custom-built fabric has been optimized for lower moisture-induced stretch, improved seam strength & tear resistance, and longer-lasting waterproofness.
What it is: 15D nylon / 50D polyester 3x2 ripstop Sil/PeU fabric
Waterproof Rating: 2,000mm hydrostatic head
Sil / PeU (poly ETHER urethane) is stronger and much more resistant to hydrolysis degradation compared to standard PU (polyurethane). Silicone on the outside, PeU on the inside. Bi-component 3x2 fabric reduces fabric stretching from moisture while maintaining superior seam strength and tear resistance from the stronger molecular structure of nylon.
Result: Better pitch stability in wet conditions, less fabric sag overnight, & longer lasting waterproof performance.
Cirq Tent Pitching Instructions:
Cirq Benefits & Features:
Cirq Design Story:
PFAS Free
Easy Return Shipping
Free First Exchange
60 Day Return Window
Fast Pitch For Real Backcountry Weather
What Makes The Cirq's Ventilation Superior?
More Usable Space Than Most UL Tents
Fast Pitch For Real Backcountry Weather
Fast Pitch For Real Backcountry Weather
What Makes The Cirq's Ventilation Superior?
What Makes The Cirq's Ventilation Superior?
More Usable Space Than Most UL Tents
More Usable Space Than Most UL Tents
Key Features
2.Flo™ Ventilation System
Ultralight shelters often struggle with moisture buildup. The Cirq’s 2.Flo Ventilation System enhances airflow and air exchange, helping reduce condensation while maintaining weather protection. With 2 full-width vents on either side of the ridge & ventilation all the way around the bottom of the fly, this is one of the most ventilated trekking pole tent options available.
NP Shield™ Fabric
Constructed from custom-built fabric that’s been optimized for real-world use:
- 2,000 mm Hydrostatic Head
- Lower moisture-induced stretch
- Improved seam strength & tear resistance
- Greater hydrolysis resistance than standard PU coatings (longer lasting waterproofness of fabric)
Result: Better pitch stability in wet conditions, less fabric sag overnight, & longer lasting waterproof performance.
Simplified Pitching & Tensioning
The Cirq is designed for fast, intuitive setup:
- Catenary cut on all fabric panels for better tension & reduced flapping
- Lineloc 3 tensioners at all stake-out points
- Long stake point lines for varied terrain
Peak guylines & mid-panel guy-outs for stability
More Usable Interior Space
- Floor Length: 91.3” (232 cm)
- Peak Height: 53” primary / 44” offset secondary
The extended floor and dual-peak design provide generous headroom and foot clearance, making Cirq ideal for taller backpackers or anyone who values extra interior comfort. If condensation exists, it’s easy to avoid contact with tent walls & keep gear dry.
The Cirq: What It's Made For
Ultralight Without the Usual Tradeoffs
The Cirq Trekking Pole Tent is built for backpackers who want more room, better ventilation, and a more stable wet-weather pitch—all in a lightweight, trail-ready shelter.
Sleep longer. Stay drier. Carry less.
Frequently Asked Questions
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Orders for in-stock items will begin processing 1-2 days after your online purchase is completed. Please note that business days are Monday through Friday, excluding holidays in the United States. Once processed, Priority shipping generally takes 1-3 days to arrive. Note that USPS Priority shipping is a time estimate and not guaranteed. You will receive an email notification once your package leaves our warehouse.
If you place an order that includes a backordered or pre-sale item, we will hold the entire order until the pre-sale item is in stock. If you would like to receive the in-stock items sooner and split your order into two shipments, please place two separate orders or pay an additional shipping fee to have the order divided into two shipments.
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Some countries may be excluded from our shipping options due to extremely high shipping costs, unsafe conditions for US carriers, or unreliable delivery services. To check if we can ship to your country, please go to the Checkout page and enter your shipping address.
Customers have the option to prepay duties and taxes for certain countries. If these fees are not prepaid, customers may be responsible for them upon delivery, depending on the import laws and regulations of their respective countries. We recommend checking with your local customs office to see if these apply in your area. APC Economy Shipping
Please note that the situation regarding duties and taxes is constantly changing. We are working to stay updated on the varying shipping costs as they evolve. Also, Live Ultralight Members and Peak tier members do no get free shipping to international addresses.
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Shop with Confidence: OV's Simple Returns Policy
- Free First Exchange:* Enjoy your first exchange at no extra cost with each order (USA only).
- 60-Day Return Window:** You have 60 days to return items; this is extended to 90 days for purchases made in November and December.
- Easy Return Shipping:* We provide return labels or QR codes for your convenience (USA & Canada only).
For more information, please visit our Warranty/Returns page.
https://outdoor-vitals.loopreturns.com/#/
*Please note: Clearance items are final sales and are not eligible for returns or exchanges. Items such as soft flasks (included with our Skyline Fastpack) cannot be returned due to sanitary reasons. If you choose to return your fastpack, a $15 charge per bottle or flask will be deducted from your refund, unless the bottles or flasks are returned with their original packaging still intact.
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Our gear is made with the goal in mind of balancing ultralight weight, performance, comfort and durability. We believe in the “Live Ultralight” mantra so we focus on ultralight weight and performance while maintaining durability thresholds established for each product.
Our warranty covers manufacturing & workmanship defects for the Expected Lifespan of our products. Expected Product Lifespan is determined by OV Gear Specialists using the following criteria:
- Product design intent & materials specifications
- Intended use of the product
- The specific issue encountered with the product
- The age of the product (based on Manufacture date)
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Yes. The 91.3” floor length and taller peak geometry are specifically designed to accommodate taller users while preserving usable interior space.
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The 2.Flo Ventilation System enhances airflow and air exchange, helping minimize condensation buildup common in ultralight shelters.
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The Cirq’s NP Shield™ (Sil/PeU bi-component) fabric is engineered to reduce moisture-induced stretch compared to alternative tent materials.
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1 lb 13 oz including guylines and stuff sack (stakes not included).
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Yes. Features like Lineloc 3 tensioners, long stake lines, catenary cut fly, and multiple guy-out points simplify setup and tension adjustments.
Full Pitch Instructions Video: https://youtu.be/XgLdZs8OcLA
Lighten Your Big 3
