Features & details * 【59 inches ski circle 】: 59 inches large ski circle allows your families to enjoy the fun of skiing,which is enough for kids, children and adults. * 【 Dual-Lock Valve Design】: We can use a manual or electric air pump to fill to 95% through the large valve,and then replenish the air through the small valve,special design can ensure air tightness,which can enjoy sliding down the snowy hill while ensuring safety. * 【 Heavy Duty Upgraded Material 】: Heavy duty snow tube is made of dual layer winter-hardy K80 PVC material and thickening processed bottom up to 0.7mm,can withstand 440 pounds of weight and can withstand extremely cold temperatures up to -25 degrees celsius,which can provide you a great ski trip. * 【 Durable and Safety 】 : Snow tube is equipped with two sturdy handles to ensure safety and stability, which is higher enough to be used with gloves. wide and deep center seat can provide ultimate comfort when sledding. Let you and your family have a pleasant skiing experience.