Material: Polyethylene (environmental protection), light weight, anti-aging, reusable Features: waterproof, sun-proof, strong, durable, non-fading, wear-resistant, cold-resistant Anti-collision fillet design: Falling acts as a buffer, more resistant to falling and crashing Ventilation: The bottom grid design allows the bottom of stacked goods to maintain air circulation Ideal for basement or garage, sales show, loft, garage or almost anywhere storage