【Safety materials】 Hamster Running Exercise Wheel is made of high quality material, non-toxic and tasteless, which can be used. for a long service life. It’s healthy and harmless to your pets. Soft and silent】 Aerodynamic design reduces wind resistance, allowing the wheels to turn smoother. The edge of the cylinder is polished, which will not hurt the rolling of the animal’s feet. 【Delicate design】 The small wheel features a translucent design, visually spacious and bright, it is easy to let you watch your pet play & agrave; the interior. The hamster running exercise wheel can be mounted on a metal cage or acrylic cage for easy installation. 【Easy to install. clean】 Washable all over the body, keep the wheel clean, increase the frequency of exercise of the animals to keep them healthy. 【Perfect place】 A perfect place is designed for your little ones animals, safe and warm for them to sleep or play. inside.