These are RUBBER tubes. Great for pulling behind a boat ( and later sliding downhill in winter) , floating on/fishing from , or making a diving platform for the lake. OR pulling behind a skidoo, ATV, car or truck. OR packing your deer back to your vehicle. Loads of year-round fun for ages 3 to 83 . Will NOT TEAR or deteriorate like the plastic ones do . ALSO have one that inflates to 4 ft. or more for $45 , 4 1/2 ft. or more for $50 , and 5 ft or more for $55 , 5 1/2 feet or more $65 , 7 ft. is $75. They have a quick-deflate valve for easy storage & transport.