inflatable castle bouncer : 1.Best material is very important for theinflatable products ,all inflatable productsof Magical are made by high durabillity fire- retardantEN71-1,2, which has more 3 years two coated side with astrong net inside , the flame retardant meets BS7837 2.Double stitching for everywhere . we doubel stitch every where , with fourfold sitisching at bottom stress point to make sure the inflatables are strong enough. 3. Professional machine . we use high quality professioanl machine sewing the inflatables .the machine is sewing 180ZVinyl. At the same time , we use 12 lines high strenght nylon thread to construct each inflatable bouncer 4.Double zippers we make strong zipper at bottom of each inflatable.zippers can help deflate the inflatable more quickly.Above the zipper ,there isa zipper cover ,which is help to disperse the zipper's stress. 5 Reinforced Strips at joint We always make reinforce strip at the bottom joint and each corner .So when the kids bouncer on the games , you don't need to worry about the safety at all, Because the bottomof inflatables can bear the kids no mattter how they play on the games. 6D-ring for fixation Each product will have thick D -ring or circle ring to fix the inflatable . it makes steady enough. 7.Safe and convenient air flap For the safety, we make safe fan in side of th e air tube , when the electricity is cut off and make the blower off suddenly, the flap willhelp to stop the air let out too quickly. so the kids can have enough time to leave the inflatable .