The Neck Exerciser works great to help you train your neck and build up neck muscles.Features:1. Enhance the neck muscles and overall stability for football players, boxers, wrestlers, etc.2. Adjustable Neck Harness for comfortable wearing experiences.3. High-quality scuba fabrics and nylon materials to snugly fit your head, forehead, and chin.4. D-rings on the sides of your ears and above your forehead to help you with complex exercises like weighted lying neck extensions.Specifications:Product Name: Neck Exerciser StrengthenerSize: Free sizeColour: BlackMaterial: Scuba material, nylonUser Group: AdultsPacking Size: about 24*17*1cm / 9.45*6.69*0.39inchWeight: about 100gPacking List: 1* Neck Weight Lifting HarnessNotes: 1. Due to the lighting effects and shooting angles, there is a color difference in the product, please understand.2. Due to manual measurement, there is a tolerance in the product size.