How to Choose the Right Size in 5 cm Briefs and 4 cm Thong
By Marlies Dekkers Lingerie & Swimwear | Published: 2026-11-03
Category: Anleitungen
Use your hip and waist measurements plus the side-width difference to pick between 5 cm briefs and a 4 cm thong—no guessing from letter sizes alone.
Quick answer
Start with your hip measurement for both styles, then use the side width as your tiebreaker: choose the 5 cm briefs if you want more coverage across the groin and buttocks, or the 4 cm thong if you prefer a minimal-back feel. When you're between sizes, size up in the thong for comfort and stay with your hip size in the briefs.
Why side width changes the size you pick
Side width is the distance from the top of the waistband to the leg opening. A 5 cm side sits lower on the hip and covers more skin, while a 4 cm side rides higher and exposes more. That difference matters most when your hip and waist measurements point to different sizes: the narrower side gives less room for error, so the thong is less forgiving if you pick too small.
When to ignore the size chart and measure yourself
If your hip measurement falls within 2 cm of a size boundary, the chart alone won't tell you which side to choose. Measure yourself with a soft tape over the fullest part of your hips and around your natural waist. Use the larger of the two measurements to pick your starting size, then adjust based on the style's coverage.
Step-by-step sizing for 5 cm briefs and a 4 cm thong
- Measure your hips and waist: Wrap a soft tape around the fullest part of your hips and around your natural waist, keeping it level. Write both numbers down. If your hip and waist measurements land in different sizes, use the larger one as your starting point.
- Compare your hip measurement to the size chart: Find the size range that includes your hip measurement. Both the 5 cm briefs and the 4 cm thong use the same size chart, so this step is the same for each. Don't size down for a tighter look—the lace and sheer fabrics have limited stretch.
- Choose your style based on coverage: Pick the 5 cm briefs if you want full coverage of the groin and buttocks. Pick the 4 cm thong if you prefer minimal back coverage and a higher leg line. If you're unsure, the 5 cm briefs are more forgiving because the wider side leaves less room for fit errors.
- Adjust for the thong's narrower side: Because the 4 cm thong has a narrower side, it sits closer to the body. If you're between sizes, choose the larger size in the thong to avoid digging. The front cut-out and lace have less give, so a too-small thong will feel tighter than a too-small brief.
- Do a wear test before removing tags: Try the piece on over clean underwear and check that the waistband lies flat, the leg openings don't cut in, and the back sits where you expect. Sit, stand, and walk. If the waistband rolls or the leg openings dig, try one size up before washing.
Product facts
- 5 cm briefs: 5 cm sides provide full coverage of the groin and buttocks. If you want a style that stays put and covers more, this is the safer pick between the two.
5 cm briefs - 4 cm thong: Crafted from recycled lace with a cheeky front cut-out. The lace has less stretch than solid fabric, so choosing the right size is more important for comfort.
4 cm thong
