These crates are lightweight and durable, measuring 15.4" L x 10.25" W x 8.25" H when open and collapsing to 2.25" H. It is made with polypropylene plastic, each weighs 1.4 lbs. It has a maximum load capacity of 22 lbs. It features an interlocking nesting system for vertical stacking up to 3 high. The price drops from $44.99 to $29.99. Shipping is free with Prime.