The product is excellent. Have bought enough overall for nearly each of my patio plants so I can move them out of the hot summer sun as required. This lets me keep healthy my beloved weeping Japanese maples & other more delicate plants without having to stay home & cover them with lace tablecloths as the sun moves (Laura Ashley school of gardening). The UV cover being flawed is not a problem as the gliders are not touch by sunlight. The wheels, as on all the 90kgm seconds) are perfect. Thank you Omnia.