Upgrade your underlayer collection with the raw comfort and bold aesthetic of the Vapor Silk Big Pouch Gay Thong by UNDER MOON. Engineered specifically for high-mobility wear, this low-rise thong pairs an ultra-lightweight, cool-touch micro-mesh body with a generously sculpted front pouch designed to support and accentuate your natural profile. The minimalist waistband sits low across the hips for a clean, non-binding fit that remains completely invisible under fitted activewear, jeans, or shorts. Whether you’re gearing up for a festival, stepping into a heavy gym session, or curating a provocative evening look, the Vapor Silk thong provides total breathability, zero-friction movement, and a second-skin feel that lasts all day.
Ultrasoft Vapor Knit: Silky, cool-touch microfiber offers incredible breathability and an invisible feel against the skin.
Amplified Contour Pouch: Generously cut front pouch provides natural lift, support, and uninhibited room where it matters most.
Ultra-Low Rise Fit: Minimalist waistband sits low on the hips to highlight your physique and stay hidden under low-cut pants.
Zero-Friction Seams: Smooth edge construction prevents chafing and binding during active movement.
Shape-Retaining Stretch: Premium elastane blend keeps its structure and snug fit wash after wash.
Brand: UNDER MOON.
Fit: Low-Rise Sheer Thong
Pattern: Solid Smooth Micro-Mesh.
Origin: Imported.
Material: Premium Nylon & Elastane Blend.
Fabric Care: Hand wash in cold water or machine wash gentle in a mesh laundry bag. Do not bleach. Air dry (hang dry) in shade to preserve elasticity and smooth texture. Do not iron.
| Size | To Fit Waist (Inches) | Waist (CM) | Real-World US Fit |
| Medium (M) | 27" – 29" | 68 – 74 cm | Lean / Petite |
| Large (L) | 29" – 31" | 74 – 79 cm | Athletic / Toned |
| Extra Large (XL) | 31" – 33" | 79 – 85 cm | Built / Muscular |
| Double XL (XXL) | 33" – 36" | 85 – 90 cm | Broad / Heavy Built |




Sign up to stay in the know, promotions, new products, and sales. Direct to your inbox.
Looking good starts with feeling good. Every pair of our underwear is designed to make you look confident, feel sexy, and move freely.
We’re here to help you find your dream fit. Shoot us an email anytime: sales@gayjockunderwear.com or call (661) 509-0046.
Because nothing beats underwear that fits like a second skin—and makes you feel unstoppable.
Last Updated: September 5, 2025