The Story Behind the 14-Peak Rainbow Collection
 
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.
 
About the 14-Peak Rainbow Gift Boxes
 
Each carabiner mug features one of the world’s 8,000-metre peaks, illustrated in rainbow colours and arranged in a rainbow sequence.
 
The Full Fourteen Peaks (14 mugs, 2 boxes)
 
Gift Box 1 – The First Seven Peaks (7 mugs)
Everest, K2, Kangchenjunga, Lhotse, Makalu, Cho Oyu, Dhaulagiri.
 
Gift Box 2 – The Last Seven Peaks (7 mugs)
Manaslu, Nanga Parbat, Annapurna, Gasherbrum I, Broad Peak, Gasherbrum II, Shishapangma.
 
Gift boxes come in two colours — red and blue.
 
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.
 
Mug Size: 8.8cm x 7.4cm
Capacity: 300ml
Gift Box Package Size: 39.3cm x 33.4cm x 8.5cm
 
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.