Innovative U-Shape Design: Unique tailbone cut-out for pressure relief, even weight distribution, and raised sides for hip support. Pre-shaped foam molds to your body for exceptional comfort and support. Upgrade to optimal comfort with our pressure relief cushion (18"L x 16"W x 4"H) and transform your sitting experience today. Note: For optimal comfort, we recommend this seat cushion for individuals weighing less than 200 pounds. For weights exceeding 200 lbs we recommend the upgraded version SC Butterfly XL Pressure Relief Seat Cushion: Split design targets pressure points on hips, thighs, coccyx for relief from lower back, hip discomfort, promoting proper posture. Ideal for long hours seated, offers relief from back and hip Thick Cushion Pad: 4.3" thick memory foam remains firm and supportive without going flat. The extra-dense bamboo charcoal-infused memory foam for freshness. Provides all-day sitting comfort Ease Of Use: Built-in handle to make it easy to carr