Children booster cushion with Strap child baby dining chair Cushion with Buckle Toddler Booster Square Seat Cushion Highchairs Hook-on Thick sponge Seat Pad kids Baby Furniture high chair booster cushion Washable Adjustable Materials: Inner Filler- Sponge; Cover - Polyester Fibers (Stretchy), Bottom-Gripper (Anti skid); Size (Length x Width): 39 x 39 cm = 15 x 15 inches; Thickness: 5 cm = 1.97" inches, for chair back; 10 cm = 3.94" inches, for chair seat; Notes: The listing price is for 1pcs, not one set. 1 Set: 1pcs 1.97" + 1pcs 3.94" (chair back & seat); Colors: Dinosaur Kingdom, small Robot, Music Dinosaur, leisurely Elephant, long necked Deer; Style: Portable, Removable, Adjustable; Zipper closure across the back of cushion; Adjustable straps & buckles, can be easily fasten on back or under the chair seat. Using for children dining, feeding, drawing, writing, or playing. Notes: please measure your “chair size” & “height” between the chair & table. Care: Hand/machine Washing. Chair Booster Seat Cushion W/strap, Children Dine Pad Pillow, Kids Toddler Pads W/Buckle, Thick Sponge Adjustable Square 15"