Unique patented SWADDLE UP™ allows a natural ARMS UP™ position ARMS UP™ allows true SELF-SOOTHING™ = more sleep Swaddle in seconds with no breakouts 2.5 TOG fabric is ideal for cool climates Ideal for room temperatures between 61°F & 68°F Certified ‘hip-healthy’ design allows the recommended flexion for hips & legs Twin zipper for easy diaper changes No loose layers to kick off during sleep Available in 2 sizes: Small & Medium Fabric content: Outer & Lining: 93% Cotton 7% Elastane, Filling: 100% Viscose (From Bamboo) Easy care: machine wash on gentle, tumble dry on low