Features: Made from silicone material, it is wear-resistant, impact resistant, and high-temperature resistant. Beginners can practice various skateboarding movements to improve their skateboarding skills and balance abilities. Lightweight designs, easy to carry and use, ready for skateboarding practice at any times. Matchs with most 49-70mm or 1.93-2.75inch standard skateboard wheels to ensure stability and flexibility. Easy to install and disassemble, without the need for additional tools, suitable for beginners and skateboarders. Specifications: Material: Silicone Color: White or Redness or Blue or Black Applicable wheels: Approx. 49-70mm or 1.93-2.75inch Package Includes: 4pcs Skaters Trainers note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.