Please check that whether the fixed parts are fixed tightly, flexible or not. If there are damaged parts change them immediately. Regularly check for loose screws.

The article adopts tubes, plastic, ticker paper and cloth, avoid being used or kept in the moisture and very cold or high temperature for a long time.

Clean the article with wet cloth.

WARNING! If the product has been used on the beach, clean it so as to remove the sand or salt from the moving parts and wheels.