Thermal socks made of 91% Acrylic,8% Polyester,1% Spandex.Sunew socks experience ultra-plush softness with fluffy fleece material layer inside and textured synthetic blend material on the outside. Imported DESIGNED FOR EXTREME TEMPERATURES: 7X WARMER THAN REGULAR COTTON SOCKS! The insulated heated socks have been specially designed to keep your feet warm even when the temperature outside is way too low. The special high-tech fibers with a high level of heat insulation would enclose more of your own body heat. The thermal compression socks are ideal for you if you work outdoors, if you go skiing or if you enjoy hiking, snowboarding, climbing and camping in the mountains during the winter. SNUGLY SOFT AND WARM: Sunew thermal boot socks are not only practical, but unbelievably soft and cozy! Heavily brushed fuzzy lining makes these stretchy socks provide warm and comfort for feet in extended outdoor trail cold weather gear. Thick thermal yarn keeps feet warmer for longer. The heated thick socks will keep your feet warm, toasty, fully supported & comfortable. These cushioned socks will be gentle with the skin of your feet and ankles and it will never irritate it nor make it itchy. MULTI-FUNCTION: These unisex thermal socks featured stay-up top keeps from sliding down; reinforced heel with deep thick yarn enhance durability; various colorful vintage trendy design can be easily match with any outfits. You can wear these fashion socks as boot christmas socks, slipper socks, outdoor socks, home sleeping socks or daily cozy socks in Winter Season Or In Any Cold Weather Areas. IDEA WARMEST SOCKS FOR PERFECT GIFT GIVING: Everyone needs more socks.Great socks often make great gifts in Christmas or holiday.These knit socks make the perfect present for hikers, outdoor workers, for Thanks-giving or Daily Wear. Colorful design for Cyber Monday,Black Friday. It’s a great gift in winter for families, friends and anyone you love. You also could choose for your girl/boyfriend, daughter/son, wife/husband, as birthday, New Year, Anniversary Christmas gift or as women socks gift. RISK FREE GUARANTEE: Your purchase is fully protected when you order in SUNEW THERMAL SOCKS. We pride ourselves on the integrity and quality of our products, and firmly stand behind all that we sell. All Sunew??s items are with 100% money back guarantee. If you have any issue with Your Heavy Winter Crew Thermal Socks, contact us freely. We offer 100% satisfaction guarantee, TOTALLY RISK FREE.