ALL-IN Mens Underwear 2026 Preview

Retail Buyers Guide: Mens Underwear 2026 Retail Buyer’s Guide
Brand: All-In
Interviewee: JB, CEO

How was the market for Men’s Underwear in 2025?
The market showed a strong shift towards “technicity meets lifestyle.” Customers are no longer looking for basic underwear, they want products that transition perfectly from a surf session or a workout to daily life, with a heavy emphasis on sustainable materials

What are the key trends in Men’s Underwear for 2026?
The 2026 season is all about high-performance eco-textiles. We see a growing demand for ultra-stretch fabrics that offer moisture management and quick-drying properties, combined with bold, ocean-inspired storytelling

In which product segment of your 2026 collection do you expect your biggest growth?
Our biggest growth is expected in the Recycled Technical Boxer segment. Our “Dark Ocean” and “POP80” models are leading the way by proving that eco-friendly products can outperform traditional fabrics in terms of comfort and durability

What shapes/designs do you offer in your 2026 collection?
We focus on an ergonomic, “second-skin” fit. Our boxers feature a wide, soft elastic waistband for optimal support without irritation, and a specific cut designed for total freedom of movement, whether you are skating, surfing, or traveling

What materials are you using? Any new ones?
Our hero material is a high-performance blend of 88% GRS-certified Recycled Polyester and 12% Spandex. This mix provides incredible 4-way stretch and superior breathability

What colour palettes and graphics are you featuring in this collection? Any standout prints or collaborations you’d like to highlight?
We are featuring 8 exclusive colorways. The standout is the “Dark Ocean” print, a deep, artistic wave pattern that reflects our brand’s surf heritage. We offer a mix of bold prints and timeless solids to suit every retailer’s needs

How are you addressing sustainability?
Sustainability is in our DNA. By using Global Recycled Standard (GRS) fibers, we reduce plastic waste in our oceans. We also focus on “Slow Fashion” by creating durable products that don’t lose their shape or technical properties over time

How are you supporting retailers to sell your Men’s Underwear?
We support our partners with high-quality lifestyle imagery.A key highlight for 2026 is our new premium packaging: it is designed to be both fun and highly functional, creating a strong visual impact on the shelves while clearly communicating our technical features.

Key Products:

The Dark Ocean Boxer:
The Dark Ocean boxer is the icon of our 2026 collection. Combining an ocean-inspired wave design with a high-performance GRS-certified recycled polyester and spandex blend, it offers unmatched stretch and quick-drying properties. Designed in Hossegor, it features an ergonomic fit and a wide elastic waistband, providing the perfect balance of eco-responsibility and boardsport performance

BOXER OCEAN