What is the difference in the sizes available other than PERIPRO-512?

•  The size of PERIPRO-512 keyboard wrist rest is 44 x 10 x 3.3 cm (17.32 x 3.94 x 1.3 inches). We have another model, PERIPRO-511, and its size is 39 x 10.7 x 3 cm (15.35 x 4.21 x 1.18 inches). Here is the Link for your information.

I love this PERIPRO-512 wrist rest. Do you make a mouse sized one as well?

•  Yes, we have the mouse size and it is listing under the S size. Please find the link below. The PERIPRO-411 is for mouse size: Link