I wanted to like this for the value, but the blocks are unsteady and I do not recommend using them if you absolutely need them to hold your yoga pose! I give them two stars mainly because the strap at least works like it needs to.
The color has grown on me! ...The product is good quality , blocks very firm and non slippery & the strap is firm and has a good feel of the natural fibre...I imagine it's cotton. I recommend the set, the price is reasonable as well!