Material: silicone+ABS
Color classification: 1,2,3,4
Maximum noise: 40 decibels
About color&size difference: According to the light and different computer monitor, the color may be slightly different as pictures.
Besides, please allow 1-3cm measurement different due to manual making. Your understanding and support are highly appreciated.
Email contact@youvimi.com if you have anything you do not know about the order
