Portable Neck Traction, extra large, 18" - 20". Portable and Lightweight and easy to store, this product is ready to use right out of the box. Give your patients the ability to take treatment with them. The portable neck therapy relieves tight muscles and pressure on the nerves and joints. The Portable Neck Therapy gives a gentle stretch to the neck resulting in comfort and relief anywhere, anytime. Relieves headaches, osteoarthritis, pinched nerves, and degeneration of disc or joint.