Lululemon Keep It Cozy Crew We designed this light, cozy crew to make warming up as comfortable as sleeping in. With four-way stretch, the loose fit is easy to layer on when we're up before dawn for a workout - so there's one less barrier between the alarm clock and our runners. Key features * lightweight Polartec® Power Stretch® Fleece fabric is breathable and oh-so-warm * locker loop on the back helps keep this layer off the locker room floor * loose, no-fuss crew fit is easy to layer on before your workout * reflective details at the back help keep you visible when the days get shorter