Salomon Men's S-Lab EXO Twin Skin Athletic Running Shorts for Technical and Endurance Runs Polyester, Elastane Twin Skin - 2 in 1 garment offering more body comfort. Skin Fit - Provides a compression like fit for security. Exo Sensifit Stability - Reduces muscle soreness. AdvancedSkin Activedry - Technical fabrics utilised to improve body comfort, by keeping you warm and dry. Inner Brief - Offers a comfortable, secure fit.