Received this beanie today and very disappointed in description it's supposedly one size fits all NOT THE CASE like always.my head size is smaller than average and this thing does NOT cover my ears entirely the lobes of my ears will b stuck out in the cold which like ALOT of the reviews stated the same problem.so I'd pass on this beanie unless its for a kid or u hav a kid sized head to me it doesn't even matter how warm it keeps my head if it doesn't cover my ears.i do own the cold gear thermo run UA beanie and hav been wearing it in 10-15 degree weather and its been great and fits properly so if you are in the market I'd definetly look into that beanie.hope this helps someone from frustration and wasting cash