Not compatible with metal allergies. Free size (adjustable at the back). As this is a handmade item, please handle it with care as it may break if pulled strongly. If it is damaged during shipping, please repair it yourself. Please refrain from commenting with requests for price reductions, as it makes me feel that my work has no value. Immediate purchase is welcome, bulk purchase is welcome. #sankakupanda store Color: Pink系 (pink-based)