Nurturally Baby Anti Roll Support - Safe Breathable Fabric for Babies Age 3 to 6 Months Old, Designed in USA (Sleep Sack not Included), Portable Baby Sleep Support System Essentials for Any Crib Product Features Designed to Be Safe Made with elastic loops that are strapped around the crib bars, this elastic system creates a slight pull from both sides of baby, leaving the device safely taut about 6 above the mattress rather than hanging down where little hands can reach it. The main body is also breathable to avoid suffocation and maximize comfort. Child Safety Certified This product complies with EN71 and CE (EU), ASTM and CPSIA (USA) Child Safety Standards. ALWAYS TO BE USED UNDER ADULT SUPERVISION. Elastic Enough to Allow Movement This two-sided support system has just the right amount of elasticity to allow plenty of free and safe movement without allowing baby to actually roll over, helping to avoid sudden jerks and staying firmly and comfortably in place when baby moves. Easy to Use in Any Crib The device is easy to install around bars on the two sides of any crib! Simply wrap each side of the product around the bars and pass the clip and cloud through the elastic loop, then clip the clouds below the hip area as shown in the instructions, safely out of reach of the child's hands. To secure the product to the sleeping sack, fold its fabric as thick as possible to be .25" to .35 (6.5mm to 8.5mm). Fibre Content Body 100% Polyester, Elastic Webbing 70% Nylon, 30% Spandex, Grosgrain Ribbon 100% Nylon. Please note: Sleep sack not included. Babies should be supervised when using the product.