L.K.
My son has SMO's and we use SmartKnit. There are a few places you can buy online, but we get them from Hangar Orthotics. They are a little pricey (if you get a compassionate person on the phone or in person at Hangar, they may give you a discount - I think we pay 1/2 price!) I know Hangar has offices in NY, we get ours from just outside Rochester. These socks wick moisture away from the skin, and are knit without seams, causing a smooth surface against the skin (no sores!) No need to use baby powder on my son's very sweaty feet! Also, we buy the ones with silver, since it is antimicrobial. Now I have all the therapists recommending these socks to their patients/families. I just get 3 or 4 pairs, and wash them out at night. You can machine wash them, but hang dry (ours have been through the dryer accidentally, and seem to be ok!) These socks are great, and come in many colors. Good luck!