Women Smartwool Womens Active Ultralite Short Sleeve Tee

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A minimalist, airy layer that works hard in heat without getting in your way.

Smartwool says: 

Made with a blend of responsibly sourced Merino wool and TENCEL™ Lyocell fibers, this performance fabric in our Women’s Active Ultralite Short Sleeve will help keep you cool when you work up a sweat. Plus, it’s very light and soft and gives you freedom of movement without bulk. For anything from trail hikes to training runs, you’ll find all-day comfort in this tee

Our Verdict

Soft, breathable and fast drying, this is one of the easiest tees to wear for warm-weather movement.

The Smartwool Active Ultralite Short Sleeve Tee weighs 102g (UK 12) and uses a Merino-TENCEL blend that feels natural but dries faster than standard Merino. I really value that mix—it balances next-to-skin comfort with better moisture handling, especially during higher-output efforts. It’s also odour-resistant, which makes it ideal for multi-day use.

The fit is relaxed rather than close, so if you prefer a more performance-oriented cut, consider going down a size. The stitching is clean and sits flat, and the island doesn’t irritate under a pack. The fabric isn’t the toughest I’ve used, but for a base layer that’s this breathable and comfortable, that’s a trade-off I’m happy with.

This is my go-to baselayer, especially for multiday hiking. I own three. 

– Reviewed by Ultralight Outdoor Gear

Features

• Our athletic fit is intended to be body-skimming to keep the body moving freely
• Ultralite fabric combines the moisture management, temperature regulation, and odor resistance of Merino with  TENCEL™ Lyocell fiber
• Odor-resistant
• Offset shoulder and side seams help increase comfort and minimize chafing
• Reflective elements

Specifications

• UK 8 weighs: 87g
• UK 10 weighs: 95g
• UK 12 weighs: 102g
• UK 14 weighs: 110g
• Fit: Athletic

Material & Construction

• 53% Merino Wool, 47% Lyocell. Exclusive Of Decoration.

Help & advice:

• The Benefits of Merino Wool