https://www.amazon.com/Ares-39x20-Inch-Adjustable-Height-Folding/dp/B01B13JERE
The 37"*20" size now is $38.99
Details:
Dimensions: (folded) 39.37" L x 19.49" W x 1.97" H; (extended) 30.31" L x 19.49" W x (adjusts) 21", 24", 26", or 27.76" H
Materials: (top) High-Density Polyethylene (HDPE)...