The Fabric That Changes Everything
Not all workout underwear is created equal – and the fabric is where it starts. If you've ever finished a gym session feeling uncomfortable or sweaty, your underwear may have been part of the problem.
Cotton vs Performance Fabrics During a Workout
Cotton absorbs moisture and tends to hold onto it, so it can feel damp and heavy against your skin during a hard session. Performance fabrics are designed to move moisture away from your skin and dry quickly, so you stay more comfortable.
Why the Gusset Fabric Matters Most
The gusset is one of the most important pieces of fabric in any pair of underwear – especially during exercise. This small section sits against your most sensitive skin throughout your workout.
That's why the gusset is worth checking when you choose workout underwear: softness and comfort exactly where you need them.
Soft Gusset + Performance Body: The Best of Both
Pairing a soft gusset lining with a performance body fabric gives you the durability and athletic performance of technical fabric, with comfort exactly where you need it most. You'll find the fabric and lining details for each Tweak range on its product page.
What to Look for When Buying Workout Underwear
- Check the gusset: Look for a soft, breathable lining against the skin.
- Look for seamless or flat-seam construction: fewer seams are designed to help reduce rubbing.
- Consider the style: For gym and high-intensity work, a G-string with minimal coverage reduces fabric bulk and VPL.
The Bottom Line
Fabric choice isn't a gimmick – it makes a real difference to how comfortable you feel when you train, especially where it counts.
Ready to feel the difference? Browse our no-VPL G-strings.

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