Step One currently has a 20% off selected styles promo code at the top of this page, aimed at selected men's underwear including bamboo boxer briefs and trunks. That 20% off code is best if the items you want are among the selected styles. If your cart includes non selected items or you need a simple sitewide save, the other fixed dollar deals or smaller percent discounts may be better for larger or bulk buys.
Small carts, one to three items: If you are buying individual non clearance items that are included in the 20% promo, use the 20% off promo code. For example, on a $120 order of eligible underwear, the 20% code takes 20% off, which is $24 off, leaving $96. If the items are not in the selected styles or you prefer an automatic offer, a $6 off for three or more items applies when you buy 3+ items and may be easier for low totals, but $6 off will normally save less than 20% on a $120 spend.
Small bulk, three to five items: For carts of 3 to 4 items that include clearance pieces, check the 27% off clearance sale first because the clearance discount applies directly to those clearance items. On a single clearance item priced $50, 27% off saves $13.50, bringing it to $36.50. If your 4 or 5 items are full price and the 20% promo covers them, the 20% code usually beats the $5 off or $6 off automatic deals. For a $100 cart of five eligible items, the $25 off deal saves $25 and the 20% code would save $20, so take the $25 off when the $25 threshold is met.
Medium bulk, five to nine items: Use the $25 off order over 5 items when you have five or more items and the total saving beats percent codes on those particular items. For example, on a $100 cart of five items, $25 off leaves $75 (you save $25) compared with 20% off leaving $80 (you save $20).
Large bulk, 10 or more items: The $80 off when you order more than 10 items is the strongest automatic saving for big hauls. For a $200 total of 10+ items, $80 off leaves $120, saving $80, which will beat the automatic $8 off for 10+ items and usually beat a 20% code unless the 20% code applies to all items and the pre discount total is under $400. The $8 per 10+ items deal is inferior to the $80 off when the latter applies.
Student shoppers: If you are a student buying 4 or more items, the 10% student discount applies via Student Beans and can be compared against the $25 or $80 fixed savings depending on basket size.
Our records show 27 offers listed for Step One in the 12 months to October 2026, with three percentage codes over that period; the biggest percent code was 25% off and 20% off is the typical code. Our team made three checkout tests in the 12 months to October 2026 and kept screenshots of the results.
Choose the single offer that leaves you the lower total on the same items. Only use the promo code when it explicitly covers the items in your cart, and follow the offer terms about minimum items and exclusions.