- SIT COMFORTABLY WITH PAIN RELIEF: Our Coccyx Chair Cushion and Lumbar Support Pillow are designed to provide exceptional back support. They relieve pressure on the lower tailbone, helping alleviate sciatica, lower back pain, herniated discs, hemorrhoids, and tailbone injuries. - HIGH-QUALITY MEMORY FOAM: Crafted from premium memory foam, our cushion retains its density while improving posture and relieving leg discomfort during long periods of sitting or driving. This set is perfect for enhancing comfort at home or in the office, boosting efficiency during work or relaxation. - SECURE NON-SLIP BASE: The cushion's non-slip bottom keeps it firmly in place, making it suitable for various settings including car seats, office chairs, wheelchairs, dining chairs, and even while traveling on planes or trains. Use it at sporting events or on bleachers, or as a kneeling pad during yoga and meditation sessions. - EASY TO MAINTAIN: The breathable velvet cover features a zipper for hassle-free machine washing. The Lumbar Support Pillow is equipped with two adjustable straps, making it versatile for larger seats and car seats. - PERFECT GIFT OPTION: This set makes an ideal present for birthdays, anniversaries, Valentine's Day, Mother's Day, Father's Day, weddings, and graduations. - DIMENSIONS: The Office Chair Cushion measures 18" x 14" x 3" and the Lumbar Pillow measures 13" x 13" x 4". The memory foam seat cushion is compatible with most common car seats, office chairs, gaming chairs, and wheelchairs. Please verify the sizes to ensure they meet your requirements.