What fabric blend is best?

Cotton-modal blends are the most comfortable. 95% cotton with 5% elastane is the classic choice. Avoid 100% polyester for daily wear.

Underwear/Underpants category streetwear fashion

Underwear/Underpants — CSSBuy Buying Guide

Underwear is an easy add-on purchase. Check fabric blend and waistband elasticity in QC photos.

See Underwear/Underpants in the Full Catalog

Boxers, briefs, and comfortable base layers. This guide covers everything you need to know before buying underwear/underpants through CSSBuy. We explain the common pitfalls, what to check in QC photos, and how to judge quality before you commit. Use this information to make smarter choices, then click through to the full catalog to browse the complete selection.

Buying Tips

1Underwear is an easy add-on. It is low risk and fills out your haul for better shipping value.
2Check the fabric blend. Cotton-modal blends feel better than 100% cotton for daily wear.
3Waistband elasticity is the main quality indicator. A good waistband snaps back immediately.
4For boxers, the leg opening should not ride up. Check the cuff design in QC photos.

Common Mistakes

1Buying the cheapest option. Cheap underwear has rough seams and poor waistbands.
2Not checking the rise. Some briefs are cut too low or too high.
3Ignoring the seam placement. Side seams are more comfortable than center seams for most people.
4Forgetting to check the label. Some replicas have obvious label errors.

QC Checklist

Fabric softness and blend quality
Waistband elasticity and recovery
Stitching quality and seam placement
Leg opening fit and cuff design
Label accuracy and placement
Overall comfort and fit

Sizing Advice

Underwear sizing is straightforward but varies by brand. Measure your waist at the navel and compare to the size chart. If you are between sizes, go up for comfort. Elastic waistbands have more forgiveness than fixed waistbands. For boxer briefs, check the inseam length — shorter inseams are more popular in 2026.

Style Note: Boxer briefs are the most popular style in 2026. Briefs are making a small comeback among minimalists. For colors, black and grey are the safe choices. Patterns and novelty prints are less common in streetwear circles. Consider underwear as a bulk buy item to maximize shipping value per piece.