Apparel & Accessories · Final Sale
18-Hour Jersey Knit Boxer
Mackweldon · sold by Mack Weldon · $15.99–$27.99 · in stock

Get the underwear that made us famous: insanely soft 18-Hour Jersey, designed for any and every day.
| Option | Price | Stock | |
|---|---|---|---|
| No Fear Red / S | $15.99 | out of stock | |
| No Fear Red / M | $15.99 | out of stock | |
| No Fear Red / L | $15.99 | out of stock | |
| No Fear Red / XL | $15.99 | out of stock | |
| No Fear Red / XXL | $15.99 | out of stock | |
| Night Owl Tent Stripe / S | $15.99 | out of stock | |
| Night Owl Tent Stripe / M | $15.99 | out of stock | |
| Night Owl Tent Stripe / L | $15.99 | out of stock | |
| Night Owl Tent Stripe / XL | $15.99 | out of stock | |
| Night Owl Tent Stripe / XXL | $15.99 | out of stock | |
| Rainforest / S | $15.99 | out of stock | |
| Shamrock / S | $15.99 | out of stock | |
| Shamrock / M | $15.99 | out of stock | |
| Shamrock / L | $15.99 | out of stock | |
| Shamrock / XL | $15.99 | out of stock | |
| Shamrock / XXL | $15.99 | out of stock | |
| Rainforest / M | $15.99 | out of stock | |
| Rainforest / L | $15.99 | out of stock | |
| Rainforest / XL | $15.99 | out of stock | |
| Rainforest / XXL | $15.99 | out of stock | |
| Hemlock / L | $16.99 | out of stock | |
| Hemlock / M | $16.99 | out of stock | |
| Hemlock / XXL | $16.99 | out of stock | |
| Hemlock / XL | $16.99 | in stock | Order via Kaupia → · Buy at Mack Weldon |
| Hemlock / S | $16.99 | out of stock | |
| Stardust / S | $21.99 | out of stock | |
| Stardust / M | $21.99 | out of stock | |
| Stardust / L | $21.99 | out of stock | |
| Stardust / XL | $21.99 | out of stock | |
| Stardust / XXL | $21.99 | out of stock |
Prices and stock from mackweldon.com’s public catalog, last checked 2026-11-03 18:52 UTC. “Order via Kaupia” shows the delivered price to your zip (item + the store’s shipping + est. tax) and places the order through Kaupia with a delivery guarantee; “Buy at the store” goes to the store’s own checkout. Agents: JSON at https://api.kaupia.com/v1/product?id=kp:bbfeb90d-9b56-494c-bab6-aa1d23d0dfcd; delivered price GET /v1/quote; order with POST /v1/orders or MCP place_order.