This Lululemon short WITH LINER is made of the lightweight swift fabric designed for to lift moisture away with sweat-wicking technology. Shorts feature the low-bounce side zippered pocket. Photos show some key measurements. The medium fit is 33" waist and 39" hips. Shell body: 86% Recycled polyester, 14% Elastane. Inner waistband: 85% Recycled polyester, 15% Elastane. Back mesh panel: 90% Recycled polyester, 10% Lycra® elastane.