Description: Material:plastics Color: blue/white Size:12*12cm/4.72*4.72inch Feature: 1. This exquisite and cute hamster running ball toy, with its innovative design and excellent quality, provides a fun, safe, and highly ornamental sports environment for your pet hamster. 2.The main body of the toy is made of high-quality plastic material, which is clear, allowing you to observe the hamster's every move inside the ball in directions and without blind spots. Whether it's their lively running figures or cute expressions, they can be seen at a glance, greatly enhancing interactivity and viewing, making every play a lively and interesting visual feast. 3.In order to ensure the smooth breathing of hamsters during play, a porous ventilation system is specially designed for running balls. The evenly distributed small holes can effectively introduce fresh and timely expel moisture and heat, ensuring that hamsters can enjoy a comfortable microclimate while running quickly, reducing the risk of breathing difficulties caused by excessive exercise. 4. This hamster running ball toy, with its unique design, comprehensive safety considerations, good ventilation performance, stable rolling effect, and convenient cleaning and maintenance, creates a fun, safe, and comfortable sports space for your pet hamster. It is undoubtedly the ideal companion for you to accompany your beloved pet to grow happily. Note: 1. Manual measurement may have an error of 1-2cm. Please understand, thank you. 2. Due to the difference between different monitors, the image may not reflect the actual color of the item. Package included: 1 * Hamster running ball toy