PASSIVE-SAFETY PROTECTION - Invented at Stanford University based on the principle of Passive-Safety Protection, the gentle touch of the bumper subconsciously triggers your child's natural Passive-Safety response, letting them know they are close to danger and should move away.;PHTHALATE & BPA Free Polyurethane Foam with NO FLAME RETARDANTS, WATERPROOF, WASHABLE **NOW WITH UPDATED NON-SKID BOTTOM ** Nylon Cover, Safe Non-toxic foam - Stays firmly in place.;PERFECT PROTECTION FOR ACTIVE SLEEPERS - hiccapop bumpers are the perfect height and ideally sized to allow ample room for your little one to stretch out while sleeping. hiccapop bumpers fit toddler beds, twin, full, double, queen and king beds.;INSTALLS SAFELY IN SECONDS, FITS UNDER ALL DEEP-FITTED SHEETS - Unlike traditional metal bed rails, hiccapop bumpers install safely in seconds and eliminate the dangers associated with inflatable bed rails.;PASSES ALL FEDERAL SAFETY STANDARDS FOR BEDRAILS - hiccapop bedrails are hypoallergenic, non-toxic, PHTHALATE & BPA Free. Unmatched quality and backed by a 100% MONEY BACK GUARANTEE.