Generic Go Jump in the Lake 2111 Cotton Linen Square Throw Pillow Case Cushion Cover 18 x 18 Inches Durable and environmentally friendly cotton linen fabric. Hidden zipper closure,Print just on one side. Square: 18 x 18 Inches. There may be 1-1.5 Inches Deviation. This case(cover) has a Zipper. The color of the throw pillow cover/cushion cover may differ due to different Monitors.