Moisture-wicking underwear for men who sweat – even when
sitting, commuting, or working all day.
SwampButt Underwear performance undergarments are made from a blend of lycra and polyester fibers and chelated silver. SwampButt Underwear fits snuggly, does not droop or bunch up in a wet knot between the thighs like traditional men’s underwear does. SwampButt Underwear is made in the USA.
How the undergarment works and what it is made of are related. First, there is the phenomena of ‘wicking’ which is the way moisture travels across a larger area of fabric. The more and further moisture (in this case sweat) can disperse across a surface, the faster it can evaporate. Imagine a squeegee pulling water across a windshield. When spread to a larger surface are, the water on the windshield evaporates faster. Or push rain water across a drive way or parking lot into a larger surface area and it also evaporates faster.
The same thing happens with our garment. Sweat wicks across a larger area and evaporates faster because of this. The rate of wicking is related to the materials and the way sweat spreads across them. Polyester fibers are hydrophobic because they are really plastic and will not absorb moisture. Our performance undergarments are made from lycra and polyester fibers. The brief style from cotton and lycra.
Buying underwear online can feel tricky. If your first pair does not fit or feel right, contact us within 30 days and we’ll help make it right. Need help choosing a size? Check the size chart or contact us before ordering.
Remember, free shipping on orders on $35.00 or more!
The SwampButt Underwear Scale of Sultry’s Week 5 recap looks beyond the final scores to the conditions fans endured. October 5, 2026 — The SwampButt Underwear picked more winners than
It’s October on the Calendar but Still Summer in the Stands… SwampButt Underwear Scale of Sultry puts fans first in Week 5 and picks UCF over Houston LAKE JACKSON, Texas,
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