LOVE THESE CROCS FROM THE GREAT AMAZON ! This grates at the skin on your heel like sandpaper, but was easily remedied by sticking moleskin over the inner portion. Well now I have to return this product within 30 days if I want to avoid being charged again, which is just a super inconvenience since this wasn?t my fault in any way. Worked well for my basketball shoes. I dont like it at all. Ive recently been getting more into powerlifting and have been doing a lot of heavy pressing. My boyfriend has the same mouse, hasnt happened to him-- they need better quality control. Great soft and light weight shoe. No slop in the track, tracks don?t slide on material at all, machined 110% absolutely perfect. Used this for night time charging for phone and watch.