Ergonomic and 5D Contoured Design - Support upgrade,5D waist muscle group support,add 5 waist line to double waist side thickening support module,Relax waist pressure in different areas,lumbar support pillow could help alleviate the pain and discomfort associated with lower back soreness,injury,chronic condition.Its ergonomic design,high density memory foam,and firm support are all designed to gently hold you in the correct position,relieve back pain from long time sitting or driving. High-Density Space Memory Foam - Fully optimize the shape and softness of the support surface.Firm yet comfortable,lumbar pillow supportive memory foam holds your waist in the right posture.Unlike other traditional back support pillow that slip and fall out of place or with insides that move around,the memory foam stays put,cradling both sides of your spine without feeling rock-hard,it is ideal for all-day use,whether driving in the car,traveling on a plane,sitting at your desk,or at home. Best Gift and Satisfaction Guarantee - Lumbar support Pillow is a perfect gift for parent, office staffs, drivers, students and teachers who sit for a long time. Size:L*W*H:43*16*39 cm/17*6.3*15.3 in