Alain Dupetit Men&rsquo;s Two Button TR-StretchTech Suit in Many Colors 100% TR-StretchTech: 95% Tetron Rayon; 5% Lycra / Spandex. Four-way ultra stretch offers freedom of movement and incredible comfort. Embedded with wrinkle-free technology and 300 thread count and is stronger than most regular TR and wool fabrics. Size 42 and below are in what we call a perfect slim/classic fit. Size 44 and above are in classic/regular fit. Two-Button Vented Jacket. Non Pleated Front Design Pants. Unhemmed Open Bottom 36" Length with Zip Fly With Button Closures.