This separate belly flap can be attached to all rugs with cross-surcingles. Slide the surcingles through the loops and adjust these so that the flap touches the belly. This flap can be attached to any blanket with crossed over-straps. Slide the over-straps through the loops and adjust them so that the flap touches the tummy. Outer fabric: 100% polyester. Lining fabric: 65% polyester, 35% cotton. Padding fabric: 100% polyester. 600D 3000/3000 ripstop fabric. 600D in combination with rip-stop stands for abrasion resistance. 3000/3000 stands for waterproofing and breathability. Waterproof, 3000 mm/m2. 200 g filling. Waterproof and breathable. 4 buckles. Size M: 45 x 55 cm, corresponds to sizes 165, 175, 185. Size L: 55 x 65 cm, corresponds to sizes 195, 205, 215.