Walmart offers Justice 5ft Floating Island with Grab Rope, Color: Tie Dye, Ages 6+, 5 Feet, Unisex for $7.31 (orig. $28.99).  Free shipping with Walmart+ or on orders over $35.

Product Description:
Justice 5 FT Floating Island with Grab Rope - Bring relaxation to a new level with our 5FT Floating Island. Large and durable design with all-around grab ropes for stable lounging and easy portability. Perfect for all summertime occasions;

• Large Lounging Platform
• Durable PVC material
• Easy Inflation 2 quick valves allow for fast and easy inflation and deflation