UPDATE The plastic is actually pretty thin, especially the bottom half. The second box I got broke in two places when I tilted it to loosen the used litter. Cracked right down the side. And too much time had passed to request a refund.

ORIGINAL REVIEW Big enough for my largest cat (16 lb). I think all four like the less claustrophobic feel of the clear lid. I like that there isn’t litter everywhere (just some in front, but that happens with any box), and they can’t spray over a top edge. Easy cleaning with wipes, no corners to get gunked up. Takes up much less space than an XL chest-style enclosure. I’ll be getting another to replace said enclosure.