We offer various sizes for the U-Shaped Cushion design. Our most popular size is 16"L x 16" W, available in 2.0" or 2.5" foam (Plus version). Our Mini Coccyx/Pudendal Cushion is designed for smaller bucket-style sport seats or on planes, trains, and in restaurants, measuring 14"L x 14"W, available in 2.0" foam. Choose from Soft, Medium, Firm, and X-Firm.The Travel Cushion design has three size choices, 14"x14", 16"x 16", and 18"x18" all available in 2-inch foam and 2.5-inch foam in our Plus version. Choose from Soft, Medium, Firm, and X-Firm.