Most comfortable gel memory foam cushion all-in-one features are unrivaled: machine-washable zippered cover for easy cleaning,non-slip rubber bottom with ergonomic design. Our seat cushion is made of premium quality durable memory foam with a cool off gel layer on top for superior comfort and breathability. Supports tailbone and relieves pressure - our ergonomic design provides maximum support and comfort while reducing pressure on the coccyx / tailbone and promotes healthy posture and reduces spinal deformities. Provides lower back pain relief - supports recovery from lower back problems, herniated discs, tailbone injuries, sciatica and other spinal issues. Great for office, home, travel, car seat or wheelchair use. Comfort and Support Combine with the High Density Memory Foam Cushion – We use a high density gel seat cushion for back pain to provide you with both support and comfort so that you don’t have to compromise one for the other. Pressure points are alleviated as the heat responsive foam gently molds to your body as you would expect from premium memory foam while ensuring effective support