MOTHER Insider Crop Step Fray in Blue. - size 31 (also in 25,26,28,30) MOTHER Insider Crop Step Fray in Blue. - size 31 (also in 25,26,28,30) 98% cotton 2% elastane. Front and back pockets. Light fading and whiskering detail. Raw cut hem. 14 at the knee and 14 at the leg opening. MOTH-WJ464. 1157 173. Los Angeles-based denim vets Tim Kaeding and Lela Tillem debuted MOTHER in the fall of 2010. Their collection offers a stellar fit, ultra comfort, and denim made from fabrics that are soft, stretchy, and cashmere-like. Expect your favorite styles reinvented along with bell bottoms and not-too-skinny skinnies.