【Type B】 Specifications: Material: PU environmental protection material Colour: Black Specifications: 60x60mm/2.36x2.36inch (PU ball), 250x40mm/9.84x1.57inch (Elastic headband) Weight: 35g Included: 1 X Boxing Reflex Ball 1 X Elastic Headband ----------------------------------------------------------------- 【Type A】 Feature: 1. Adopt vacuum suction device, no holes, convenient installation, strong suction. 2. The sphere is made of polyurethane foam material, with strong structure, durability and good grip. 3. High-quality rubber elastic rope, anti-aging, environmental protection, deodorization, high elasticity and tensile strength; The length of the rubber rope can be adjusted freely according to different training plans. Specification: 5. Material: PU & silicone Ball diameter: 9cm/3.54in Rubber rope size: Length 2.9m/9.51ft, diameter 3mm/0.12inch Weight: 170g Included: 1 X Elastic Ball without Hole 1 X Rubber Rope 2 X Suction Cup 4 X Adjustment Buckles 1 X Black Storage Bag 1 X Instruction Note: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow 1-3mm measuring deviation due to manual measurement.