?his castle house is made with exclusive pillar design and high-strength rubber construction material with adopted high-quality of soft layers of rubbers with stand years of repeated use for limitless bouncing fun. .?Perfect for outdoor use. ?SAFETY FOR CHILDREN?: This Castle bouncer house is hypoallergenic and non-toxic, making it safe for children. .?This Castle bouncer high walls and a floor with double mattress, this well-balanced bouncer is sturdy enough to offer a secure bouncing platform and won't tip or wobble even if kids jump with all their energy.