Apparel & Accessories · Undershirts
18-Hour Jersey Crew Neck Undershirt
Mackweldon · sold by Mack Weldon · $38.00 · in stock

Our classic undershirt in our insanely soft, signature 18-Hour Jersey fabric
| Option | Price | Stock | |
|---|---|---|---|
| Bright White / S | $38.00 | in stock | Order via Kaupia → · Buy at Mack Weldon |
| Bright White / M | $38.00 | in stock | Order via Kaupia → · Buy at Mack Weldon |
| Bright White / L | $38.00 | in stock | Order via Kaupia → · Buy at Mack Weldon |
| Bright White / XL | $38.00 | in stock | Order via Kaupia → · Buy at Mack Weldon |
| Bright White / XXL | $38.00 | in stock | Order via Kaupia → · Buy at Mack Weldon |
| Grey Heather / S | $38.00 | in stock | Order via Kaupia → · Buy at Mack Weldon |
| Grey Heather / M | $38.00 | in stock | Order via Kaupia → · Buy at Mack Weldon |
| Grey Heather / L | $38.00 | in stock | Order via Kaupia → · Buy at Mack Weldon |
| Grey Heather / XL | $38.00 | in stock | Order via Kaupia → · Buy at Mack Weldon |
| Grey Heather / XXL | $38.00 | in stock | Order via Kaupia → · Buy at Mack Weldon |
| Blue Night / S | $38.00 | out of stock | |
| Blue Night / M | $38.00 | out of stock | |
| Blue Night / L | $38.00 | out of stock | |
| Blue Night / XL | $38.00 | out of stock | |
| Blue Night / XXL | $38.00 | 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:e9f9c87d-d3b7-4bc6-ab69-edf993db8cef; delivered price GET /v1/quote; order with POST /v1/orders or MCP place_order.