Pine Create Co., Ltd. (headquarters: Osaka, Osaka Prefecture; CEO: Yoshiyuki Matsui), a company that plans and manufactures household and interior goods, is behind the "totonoi"-style sauna brand GoRelax. GoRelax is teaming up with Doshisha Corporation's (headquarters: Osaka, Osaka Prefecture; President: Masayuki Nomura) hugely popular care-appliance lineup Gorilla Series for a special collaboration item, the Gorilla-Protected Sauna Hat, launching in early October 2026.
Behind the Collaboration
A dream team-up that began with an unexpected case of "the gorillas overlap!?"
GoRelax is a "totonoi"-style sauna brand that has proposed a sauna lifestyle together with its quiet, shy gorilla mascot Mamoru-san, aimed at soothing everyday fatigue. Doshisha's Gorilla Series, meanwhile, is a lineup of health appliances and daily goods built around bold, impactful designs that address real everyday concerns — including the powerful calf-care device "Gorilla no Hitotsukami" — and it has drawn plenty of buzz on social media.
The two brands share a "gorilla connection" that crosses the line between household goods and appliances, and a shared feeling of "wouldn't it be fun to do something together someday!" eventually came together to bring this once-forbidden collaboration to life.
For everyone who loves sauna, the collaboration delivers a sauna hat that combines function and humor for the ultimate "totonoi" feeling.
Design Highlights of the Gorilla-Protected Sauna Hat
1. A built-in heat-shielding aluminum sheet protects your head from sauna heat, reducing light-headedness
The inside of the hat has a built-in heat-shielding aluminum sheet that cuts the intense heat of the sauna room. Because the head is less prone to feeling light-headed, wearers can settle in and warm up thoroughly, letting both sauna newcomers and enthusiasts enjoy their sauna time with peace of mind.
2. A deep silhouette that protects hair and ears, plus a clean, antibacterial and odor-resistant mesh
With a deep fit (circumference of approximately 830 mm) that covers down to the eyes and ears, the hat guards hair against dryness and damage caused by sauna heat. The fabric uses a breathable, quick-drying, antibacterial and odor-resistant mesh, so it stays clean even when you sweat.
3. Reversible for any mood, with a limited-edition collaboration woven label
The hat comes in a reversible black x light gray design to suit any mood. Along with a convenient pocket that fits a locker key and a loop for hanging, it features a limited-edition collaboration woven label, available only for now, with Mamoru-san and the Gorilla Series lined up together.
Product Overview
- Product name: GoRelax x Gorilla Series: Gorilla-Protected Sauna Hat
- Release date: Early October 2026 (planned)
- Price: ¥5,500 (tax included) / ¥5,000 (before tax)
- Color: Black x Light Gray (reversible)
- Size: Approx. W380 x H290 mm (circumference: approx. 830 mm)
- Material: Polyester, PET
About the "Gorilla Series" (Doshisha Corporation)
Led by the powerful calf-care appliance "Gorilla no Hitotsukami," which feels just like being gripped by a gorilla, the Gorilla Series lineup is built around an "impact design" concept — matching each product's strength, such as being "super strong" or "super heavy," to its purpose — along with a playful spice of humor woven into product names and catchphrases. The lineup responds to real, everyday needs.
About the "Totonoi"-Style Sauna Brand GoRelax
Built around the concept of "bringing the world of sauna into everyday life," GoRelax is a "totonoi"-style sauna brand where the quiet, shy gorilla Mamoru-san helps reset your mind and body amid a busy daily routine. The lineup ranges from staple sauna hats and mats to a wide range of soothing items for everyday use.
