The Reddit community is overwhelmingly enthusiastic about Duluth Trading Company's Armachillo boxer briefs, with many users reporting 10–15 years of regular use without needing to replace them. They are frequently compared favorably to Duluth's own Buck Naked line, with Armachillos consistently praised for superior elastic durability and longevity. A small number of users report quality control issues or early failures, and the price point is a recurring concern, though most feel they're worth it — especially on sale.
The majority of the community reports exceptional longevity — often 10+ years — but a meaningful minority have experienced early failures, and price makes it important to buy on sale and air dry to maximize lifespan.
Users consistently highlight exceptional longevity, with many reporting pairs lasting 10–15 years in regular rotation. The Armachillos are particularly praised for keeping their elastic waistband integrity far longer than competing styles.
A minority of users report premature elastic failure or pairs falling apart within a year or two, raising some concerns about batch-to-batch quality consistency. The price is frequently noted as a barrier, though sales are commonly recommended.
A 270-pound UPS driver who's been wearing the same five pairs since 2020 reports they've held up through roughly 150 wears each, with only minor elastic loosening at the thigh as a complaint.
One user has been wearing the same Armachillos for about 15 years and still hasn't had to throw a single pair out — though the oldest ones are starting to thin in the crotch, they haven't developed holes yet.
A woman training for marathons says Armachillos are her go-to for race day because they're the only underwear that don't get misshapen or develop holes after repeated washing and high-mileage runs.
Several users note a consistent pattern: their Buck Naked waistbands stretch out and become unwearable within a few years, while their Armachillos from the same era are still going strong.