Lois Hong and Xiaoxiao are two Chinese girls who share a love for mountains and art. They met while climbing Manaslu — Xiao liked drawing peaks with colourful pens, and Hong loved capturing peaks through her lens. In 2025, Hong invited Xiao to draw 14 rainbow peaks for Out of Skool. And just like that, the 14-Peak Rainbow Mug Series came to life - full of colours, stories, and mountain loves.
The lightweight OOS Carabiner Happy Mug goes wherever you go — home, school, camp, mountains, beach, or just about anywhere.
Its unique carabiner handle makes carrying effortless. Clip. Go. Sip
Material & Safety
Made from food-grade 304 stainless steel - safe, strong, reusable, lightweight, and easy to clean.
Size: 8.8cm x 7.4cm
Capacity: 300ml
Package Size: 10.5cm x 10.5cm x 9cm
How to Use & Care
- Before your first sip, give it a rinse with hot water (80°C or above).
- Hand-wash only — to keep the colors happy and bright.
- Not suitable for microwaves, dishwashers, or open flames.