The best replacement for warmers is tights.

The best alternatives to warmers are rated as following:
★★★★★  tights
★★★★★  leg warmers
★★★★★  boot socks
★★★  rice warmers
★★★  walmart warmers
★★★  tights cycling
★★★  long sleeve jersey
★★  long sleeves
★★  oxygen absorbers
★★  sanyo hand warmers
★★  base layer
★  fingerless gloves
★  candle warmers
★  amba towel warmers
★  candles
★  mug warmers

Your alternative for warmers is not listed? Suggest!
Speaking about warmers, one probably shouldn't forget about headband.

Other search terms related to warmers and their ratings are:
★★★★★ headband
★★★★ skinny jeans
You have in mind a companion for warmers and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of warmers in all years. Click on graph for more.
warmers
tights
leg warmers