I never use such a thing instead of simple little pad, so i had some curiosity, taking this one. Well, it's a simple and maybe unnecessary item, but i like it). Mouse slide very good, pad is nice for touching, also providing arms some rest from hard surface (a very little, but helpful). Cloth quality is good, size will fit your mouse, keyboard, hands, phone and maybe cup of tea. Also pad looks very solid, and provide some irrational sort of comfort. So i can't say anything about larger versions of this, and maybe it's extra thing, but it's rly good, useful and high quality extra thing) In terms of efficiency it's a small boost for your work\game performance, solid boost for your workplace style and sense of comfort, and a little bonus for hands. Yep, and it seems quite easy to clean, it's a good point 2.