Approx Weight per pair 1.60 kg (Yth)PVC Leather Facing with High Density Foam/Reverse Cane Construction Low Density Foam Vertical Bolster for comfort with One-Piece Low Density Interior Bolster for extra protection Dual Layer Foam & Fibre, Foam/Cotton Knee Locator 2” Strap x 2, 1” Strap x 1 PVC Instep for durability