Here's what other sites are saying:
The Smartwool PhD HyFi Half Zip top features articulated elbows with engineered thumb-holes and clean finish binding at sleeve opening. It also has a center front half zip with semi-locking logo slider, full draft flap and chin guard.
- CampSaver.com refers to the men's version
Free Shipping. Smartwool Men's PhD HyFi Half Zip FEATURES of the Smartwool Men's PhD HyFi Half Zip HyFi Double Jersey knit 13in. (34 cm) center front zipper with semilocking logo slider and chin guard Secure zip chest pocket Articulated elbows with engineered thumbholes SPECIFICATIONS of the Smartwool Men's PhD HyFi Half Zip Semi-Form Fit Garment Weight: 19.05 oz / 540 g Fabric Weight: 10.9 oz/yd2 / 370 gm/m2 Shell: 64% Merino Wool, 36% Nylon Pocket Bag: 100% Polyester
- Moosejaw refers to the men's version
CLOSEOUTS . When pushing the limits in cooler temps, SmartWool's PHD HyFi midlayer top keeps your comfort factor in check with its durable, climate-controlling merino wool blend. Available Colors: DEEP NAVY, FOREST, MAHOGANY, BLACK, BRIGHT RED, DEEP SEA. Sizes: S, M, L, XL, 2XL.
- Sierra Trading Post refers to the men's version
With warm merino wool next to your skin to wick moisture and a tough outer fabric face to resist wind, the SmartWool PhD HyFi half-zip top helps you stay warm on cross-country ski trails. Bi-component construction places wool next to the skin to maintain moisture-wicking, heat-regulating comfort; nylon outer face resists wind and abrasion. 13 in. zip with draft flap lets you easily regulate core temperature; chin guard ensures comfort. Zippered hand pockets and zip chest pocket securely stash essentials; thumbholes allow sleeves to extend over top of hands for warmth. Semifitted cut of the men's SmartWool PhD HyFi half-zip top is not too tight and not too loose.
- REI refers to the men's version
The SmartWool PhD HyFi 1/2-Zip Top's heavyweight merino works as a warm insulator for nasty mid-winter storms. Then, as spring welcomes you into the stable backcountry, you can wear just this top on your way up the skin track--its nylon sleeve panels withstand branch encounters, its zipper can dump excess heat, and its merino wool keeps enough heat inside when a cloud covers the sun.
- Backcountry.com refers to the men's version