Note: Manual measurement has an error of 1?3cm specification: Item Type: Children's Knee Pads_x000D_Product Material: Cotton + Blended_x000D_Product Size: Approx. 16x7.5cm / 6.3x3.0in Features: 1PROFESSIONAL DESIGN: According to the baby's leg shape, it is designed to be wide at the top and narrow at the bottom. 2STRETCH FREELY: The elasticity closes, stretches freely, the baby crawls and bends repeatedly without being restrained. 3THIN AND LIGHT MESH: The mesh is light and thin. The crawling knee pad is very breathable, absorbs sweat, deodorizes and is durable, and is soft to wear. 4FUNCTION: Baby knee pads can protect your baby's knees from scratches and abrasions during crawling and learning to walk. 5MULTI LAYER THICKENED INNER PAD: The crawling knee pads use a multi layer thick inner pad to protect the knee from injury. PackageList: 2 x Knee