Amazon cuts an extra 20% off a selection of men's and women's outdoor and work boots via coupon code 20WORKBOOT. Plus, Prime members receive free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, it starts around $5.) Choose from styles by Dr. Martens, Bogs, Caterpillar, Skechers, Timberland, and more. Some exclusions apply. Deal ends January 22.

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A couple of best bets, after coupon:
-- Caterpillar Men's Transform Boots in Dark Beige for $47.65 (pictured, low by $20)
-- Dr. Martens Women's Leyton Boots in Black for $48.95 (low by $19)