This neck traction device gently stretches neck muscles allowing the vertebral discs to realign, freeing the nerve root tissue from pressure. Neck muscles slowly relax allowing misaligned vertebrae to resume the natural curve. PRODUCT DESCRIPTION: Hand Pump:Wf-1 type hand pump Material of bracket: Polythene Lining:100%cotton Outer layer: PU leather  Inner layer:TPU Length:62cm~67cm Weight:175g Width before inflation:9.5cm The pressure that internal chambers endure:<=0.15Mpa Features: [Working Principle]After inflated, it can provide a traction and enough decompression for waist spine to elongate the intervertebral space in lumbar spine, and to reduce vertebral burden & alleviate back pain. [Relax Muscle Disease]It can relax lumbar muscle spasm, strain and pain. [Help Treatment & Relief]Reliable to help relief pain of degenerative disc disease, spinal stenosis, sciatica, spondylolysis, pain in back, hip, thighs, legs and feet caused by bulging discs and herniated discs. [Good Lumbar Support]Design to maintain proper posture, help intervertebral disc, nucles pulposus back to its natural position. [Hand Pump Inflation]Equip with hand pump to adjust air pressure manually. With air pressure gauge to monitor the whole process. [Widely Usage Product]Suits people who doing strenous work, heavy lifting, driving, and people with upper disease. Can be used at home, office, car, standing or sitting use acceptable.Light-weight, can be wear over thin clothes.