Here's what other sites are saying:
Heavyweight long-underwear bottoms just make your legs turn into sweaty logs by the end of the day. And ankle-length long-underwear bottoms make it seem like there's about 50 yards of fabric bunched up inside your boots. Welcome to the SmartWool NTS Lightweight Boot Top Bottom. Lightweight merino wool naturally regulates your body temperature, and the shorter length means no more boot bunching.
Cut short for footwear with high cuffs such as ski boots or winter hikers, the men's SmartWool Lightweight Boot Top long underwear bottoms enhance comfort during activities in cool weather.
CLOSEOUTS . Specially cut to hit just below the knee -- and just above your boot line -- SmartWooland#39;s NTS Light 195 Boot Top base layer bottoms solve the problem of crowding a base layer and thick socks into your boots. Available Colors: BLACK. Sizes: S, M, L, XL, 2XL.
- Sierra Trading Post
Wear the Lightweight Bottoms from SmartWool when you need a soft, breathable base layer for aerobic-level output in all weather. Worn alone, these bottoms helps regulate your temperature and keep you dry through both cold and warm conditions while they offer warmth without causing you to overheat when you wear them as a baselayer.
- Mountain Gear