【Ab Roller Wheel and Plank 2 in 1 with timer】- It’s not only an ab roller wheel, but also a plank. You could do plank anywhere without yoga mat. The elbow support and grip are covered with foam, very soft and comfortable, and non slip and sweat absorbent. 【Automatic Rebound Abdominal Wheel】- Built-in intelligent brake and high elastic spring, elastic force could assists you return when rebounding, reducing arm force, precisely exercising your abdomen, easy to persist exercise , so very suitable for beginners. 【Double Wheel Design】- With two 4.14 inches thick wheels, large contact area for smooth rolling and better control, and the wheels won't slide along the steel bars with update design, more stable and safe. It’s made of stable and Eco-Friendly material, won't make noise or scratch the floor, good weighing performance up to 330LBs. 【Multilayer Material Roller Wheel】- Our roller wheel with six layer materials, including Anti-skid layer, Reinforcing layer, Shock-absorbing layer, Sound-absorbing layer, Thickened layer Support layer. Owning excellent noise reduction effect, so there is no damage to your floor. 【Design of Snap Fit】- Very easy to assemble, each parts are connected by snap fastener, making it more convenient and stable to use, without loosening and falling off like screws, and easy to disassemble and carry. Besides, Including a 13.6 * 6.7 inches thickness foam knee mat. Chihope Abdominal Roller Wheel Chihope Ab rollers is a perfect abs workout equipment, it's not only great for strength training, it's also a plank trainer that activates and strengthens your core strength. The double-wheel design provides stability while you use it, suitable for both beginners and professionals.This ab wheel is one of the must-have abs workout equipment for all fitness personnel. Feature: 1. Combination of abdominal exercise machine and plank support machine: combine elbow support and plank support into one, scientific strength, and more effective training of your abdominal and core. 2. Automatic rebound design: adopt automatic rebound technology, automatic steel rebound intelligent auxiliary brake, built-in braking system, steel rebound more smoothly. 3. Dual Wheel Design: The ab wheel for abs workout has wider front and rear two wheels for smooth rolling and better control. 4. High-quality material: This rebound wheel roller is made of stable and environmentally friendly plastic, with five layers of sound-proof material, anti-skid layer, reinforcement layer, shock-absorbing layer, noise-reducing layer, and support layer. 5. Non-slip and durable: The exercise roller has a textured non-slip ab roller that can firmly grip any floor surface, and the durable and wear-resistant rubber tread ensures long-lasting use. 6. Smart Timing: With smart timer and counter, you can accurately record your workout duration, frequency and intensity for better results. Product Parameters: Material: ABS, PVC Color: Orange Wheel width: 10.5cm Applicable people: Unisex Place: Indoor, Gym Function: Plank support, elbow support, yoga etc. Parts that can be exercised: arm, buttock, abdominal, lower body, back , chest Packaged Products: 1 X Ab Roller with Elbow Support 1 X Instruction Manual 1 X Knee pads