3-Pair Ekouaer Women's Thermal Underwear for $20

Amazon offers the Ekouaer Women's Lightweight Thermal Underwear Base Layer for $20, down from a full price of $40.

This is a 50% discount, representing a significant price drop on a three-pack of thermal underwear, which is comparable to or better than typical sale prices. Shipping is free if you have Prime or on orders over $35, making it convenient for Prime members.

The deal requires entering a coupon code NPRZIA2O at checkout to get the discounted price. Given the large percentage savings and the free shipping option, this is a compelling deal for cold-weather base layers.