This air pump plug is specially designed for various inflatable products. Made of high-elasticity sealing material, it firmly locks air after being inserted into the inflation port, preventing leakage and keeping inflatable toys, swimming rings, yoga balls, air mattresses, etc. fully inflated for a long time. It fits most inflation port sizes and is easy to install: no tools required, just insert and rotate or press to fix; simply pull out to remove, which is convenient for both the elderly and children. The material is wear-resistant, tear-resistant, waterproof and moisture-proof, not easy to age or deform, and can maintain good sealing performance after long-term use. Whether for outdoor camping, pool fun or home storage, this air pump plug is an essential inflatable accessory, effectively solving the problem of air leakage in inflatable products and ensuring a safer and more worry-free user experience.