Approx Weight per pair 1.75 kgPU Leather Facing with Traditional Cotton/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 Mesh Instep for comfort