Ties are 12” long and come in a set. The ties are placed as accordingly: ties placed at back corners will be placed along the back width of the cushion, 4 ties at all corner will be placed on all for corners, 2 ties at back will be placed along the back width of the cushion, 4 ties at front and back will be placed on the front width and back width, 2 ties at side will be place on the depth of the cushion. Cushion.com is not responsible if the customer inputs the dimensions incorrectly and receives the ties in the wrong place.