FLEX Cotton Rib Stretch Trunks - 2 Pack BTS26 The space between layers acts

The space between layers acts as an insulating layer trapping warm air from your body

It's lined around the ear band with the softest stretch fleece for added warmth and comfort

making these briefs ideal for active lifestyles or relaxed lounging

The inside collar and chin guard are lined with fine gauge Merino wool jersey offering comfort with added warmth

HeatFX's Ultralight fabric innovation is a combination of technically engineered fiber formations that provide superior warmth without bulk

FLEX Cotton Rib Stretch Trunks - 2 Pack BTS26 The space between layers actsMoves with you, not so basic rib trunks. This product is proudly made in Canada. We refined classic cotton rib. The natural features of cotton enhanced with spandex combine to give you the best in cotton rib construction comfort and shape retention. Cotton is inherently soft, breathable, and absorbent. Mid Rise Trunk 3. 5" inseam. Legbands 1" bands stay in place for a secure, no slip fit. Low Profile Seams Flatlock seams lay smooth next to body.