Indisputable that it is easy to use because the product is with the adoption of minimalistic feature. Fish tank corner cover is soft, thick, and closely fitted to prevent collision from the corner of the fish tank. It is constructed of PVC material. We have different sizes for you to choose. This product is suitable for fish tank. Item Name: Corner Protectors Material: PVC Features: Easy to Use, Tight Fit, Eco-friendly Size Details: S, Thickness: 5mm/0.2" (Approx.) M, Thickness: 5.5mm/0.22" (Approx.) L, Thickness: 6mm/0.24" (Approx.) XL, Thickness: 8mm/0.31" (Approx.) 2XL, Thickness: 10mm/0.39" (Approx.) 3XL, Thickness: 12mm/0.47" (Approx.) 4XL, Thickness: 15mm/0.59" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 4 x Corner Protectors