soft for a pumice stone [SEP] these are just ok for a pumice stone in my personal experience they did not really work for me as i found them to be entirely too soft as i have tough skin with callouses they came in a pack are approximately with a rough or gritty soft side that easily dents left a gritty residue on my skin then there is a harder softer side that left a weird powder behind both of which i was able to wash off in my experience pumice stones are usually much harder do not disintegrate as quickly as these did i typically soak my feet for a bit then air dry them right before using the pumice stone when done i wash my feet but with these i even tried not soaking my feet using them before washing neither way got me any significant resultsoverall this is an ok product but my experience left me thinking they may not be for everyone especially those with thick skin callouses i will update if things change please see pics with my review for reference i did receive this product for free but that has in no way influenced my review i depend on honest reviews to buy the best products i can within my budget therefore i strive to be thorough in my reviews i personally choose test use all products i receive before leaving a review if this review helped please let me know by clicking the helpful button