Have used these now for a year, easily a dozen plus washes. They are now my go-to drying towel. Initially, used both these (GSM~370) and the pluffle (GSM 490) and surprisingly, I found the pluffle actually seemed to be less absorbant, too fluffy (despite a review in this post to the contrary). Plus the waffle weave (WW) is 75% larger. I use 5 since I never wring out; just grab a new one (bought a 10 pack) and chuck the used ones in the waiting pail with water &Rags to Riches.
Highly recommend.
PS: Be sure to prewash, the dark blue dye will transfer..