Walmart has Summer Waves Rectangular Inflatable Truck Bed Pool (Gray) for $29.98. Shipping is free w/ Walmart+ ( free trial available ) or on orders $35+
Product Description from Store
- Easy setup, just inflate the rings and fill with water
- Lightweight to pack and store
- Repair patch included
- 2 air chambers for added safety
- 2-in-1 valves for easy inflation/deflation
- Durably made from puncture-resistant materials
- Pool shape: rectangular
- Pool type: inflatable
- Approximate inflated size: 66" x 62" x 21" (1.67 m x 1.57 m x 53 cm)