Firstgear Heated Pant Liner

Had these for 3 seasons now and I use them all the time. I have other heated gear but these are my go to pant liners. They are Spandex so formfitting like the description says and it makes a big difference. I wear them all day under my jeans and its great because when off the bike, no one knows they're there. (like long underwear-just slightly thicker#. Heats thighs/knees only but Ive always been warm enough. I do, however, wear over pants #uninsulated# over my jeans to block the wind when below 45, but with that setup Ive been warm with these down to mid 20's, no problem. #FYI, my bikes have partial fairings so my legs are not constantly in direct wind blast# But these are liners #underwear really# so the proper outer wear for the bike/ conditions is always important. These are VERY comfortable.Breathe well too. Im 5'7, 32 waist 160 wear a med but they are a little long. Bought a pair for my wife too! I found that by wearing a women's #cant tell the difference# med , it solved my length issue nicely. I plug in boot liners or socks to the sock plugs and Im good for ALL day, all winter. #Even use them in the summer on thos chilly morning Sierra Nevada mountain rides) I ride daily in all kinds of weather. Work very well with my Firstgear jacket liner/glove liners etc. I'm then transformed into a human electric blanket! Awesome and Im often the only bike out there in the cold. Peeps stare at me as I go by on the freeway. Highly recommend!!