Altitude Performance Tee

The Altitude Tee was engineered for those who demand performance and refuse to settle.  Near weightlessness & excellent breathability combined with a thoughtful design will keep you comfortable whether you’re trail running, hiking, at the gym, or in almost any other performance oriented setting:

  • Ultralight and Breathable: Designed for year-round use, the Altitude Tee offers near weightlessness and exceptional breathability. Whether you're tackling hot summer hikes or braving freezing winter expeditions, the 2 - 3 oz base layer will allow you to breathe & stay comfortable.
  • Moisture Management: Stay dry and comfortable no matter the conditions. The performance synthetic fabric wicks moisture away from your skin and dries rapidly, ensuring you stay cool and dry during high-intensity activities.
  • Athletic Fit: Enjoy a comfortable yet athletic fit that's not tight or restrictive. This allows the synthetic blend to effectively manage moisture while providing freedom of movement for any performance-oriented setting.
  • Simple & Comfortable: With no hardware, the Altitude Tee offers simplicity and decreased weight, allowing you to focus on your performance without distractions.
  • Sun Protection: Prevent sunburns with the long sleeve option without sacrificing weight or breathability. Stay both cool & protected during adventures.

Experience pure performance with the Altitude Tee. No frills, just reliable comfort and functionality for your most demanding adventures.


Long Sleeve: 3.6 oz (men's Large)

Short Sleeve: 2.9 oz (men's Large)


True Flat-Lock Seams

Raglan Sleeves

Excellent Stretch

Moisture Wicking


Quick Drying

Sun Blocking Ability


  • Fabric: 80 GSM 100% polyester
  • UPF Rating: Inconclusive because fabric is too light & thin, making it hard to test - (the Altitude has been tested extensively in high elevation sunlight with no sign of UV ray penetration)
  • Performance Benefits: breathable, fast drying, moisture wicking
  • Fit: Close - The Altitude should fit close to skin and fit easily beneath other layers.
  • Gender: Men's sizing
  • Warranty: Outdoor Vitals Performance Promise

Care: This product is built for ultralight performance, & was not built to withstand abrasion.

Do not wash in a machine that has an agitator. Use mild detergent on a delicate cycle with cold water. Hang dry.

Note: If used with a backpack, some pilling may occur. Pilling will not affect performance, & is not covered under warranty.

Layering Collection: Kinetic

Layering Category: Moving Set

Product Care

Your Altitude Tee is a high performance piece of gear. It needs some extra attention to keep it performing at the highest level.

Please read through the care instructions below to ensure that you care for it properly:

Before Washing

  • Never wash your Altitude in a washing machine that has an agitator.
  • If you cannot follow the prior instructions you should hand wash your product

The Wash & Dry Process

  1. Use mild detergent like Dreft (for babies) or Nikwax Tech Wash (for technical gear).
  2. Choose Low Spin or Delicate wash.
  3. Choose Cold Wash & Cold Rinse (add extra rinse if possible).
  4. Hang dry until the product is completely dry.

For more information on caring for your gear please visit https://outdoorvitals.com/pages/care-guide-faq



Altitude Features

Designing The Altitude

Altitude Testing

Built to handle what you do

perform at your best every day.

As someone that likes to get out there & move, you need equipment that can keep up.

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Customer Reviews

Based on 34 reviews
So good I just ordered two more !

The combination of quickly drying, smooth fabric against skin and outer fabric perfect for layers to slide over. Really the perfect shirt for every hiking trip. Fantastic fit !

Altitude Tee

Great sunblock, overall protection. I was in blazing Sun in the Northeast on a 98 deg humid day and I was comfortable. That never happens!


Great addition to the altitude line. Very light weight and breathable.

Mark Milhollen

Extremely light weight & sized correctly

Great Material

Bought the short sleeve version of this and found it to be invaluable in my layering for hiking. Figured couldn't go wrong with the long sleeve version of this. The material used to make these shirts is amazing. Wicks moisture and drys very fast. Given the price point and the ROI.. well, well done Outdoor Vitals!