Functions: Used for dragon boat training and competitions, increases friction between the body and core, improves the comfort of the sitting position, relieves fatigue and helps release strength when descending. Dragon Boat anti-slip shock absorption cushion Dragon Boat Seat EVA Dragon Boat Race training seat. EVA material: U-shaped cushion, waterproof and durable, not easy to break. Non-slip, waterproof, breathable, easy to carry. Size: 32.5 x 16 x 4.5 cm / 12.80 x 6.30 x 1.77 inches