A bumpy sensory fun bangle. At 60mm internal diameter it can fit most adult hands as it stretches easily, but is also not too bulky for little wrists so this works for adults and children. They stack beautifully too, with an ultra soft feel, they are chewable, twistable and fun. Suitable for moderate chewing. Useful for nail biters, wear over the four fingers as a barrier to the nails and re-direct chewing to the bangle.