i was quite surprised when these arrived as i haven't seen socks like these but I love them.When you first put your feet in these socks you will feel cold but they soon warm up within seconds.They have a gel lining throughout and is infused with therapeutic botanicals oils such as Vitamin E and mineral oils (jojoba oil, grape seed oil, olive oil).They are designed to help enhance blood circulation, relieve stress and fatigue, and promote skin renewal. Suitable for foot scrub, pedicure handy spa, foot or hand massage or reflexology, and sauna.It has 28 footprint dots underneath to help with them being nonslip.Really good quality and cotton on the outside.