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Pow days not gamma rays.

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Person working on a yellow surfboard with fins in an indoor setting
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What is MTN.BUM?

MTN.BUM is a friend in the mountains. A limited-edition capsule collection designed in collaboration with Geoff McFetridge, bringing surf culture to the mountains.

Person skiing with a Sunbum sunscreen container in the foreground, surrounded by snow-covered trees.
Navy cap with branding, MTN BUM face stick, and sticker pack on a yellow background

MTN.BUM for Mountain Professional

MTN. BUM Bundle (all 4 items) - $120

($130 value)

Grid of cartoon illustrations on a yellow background
Geoff McFetridge

Geoff McFetridge is a Canadian artist and designer living and working in Los Angeles, California. McFetridge creates graphic images in fine lines and bold colors with repetition, perspective, and simplicity. Transcending creative boundaries, McFetridge is a multidisciplinary artist working across animation, sculpture, textiles and paintings. McFetridge is the winner of the 2016 Cooper-Hewitt Smithsonian National Design Award and was awarded The AIGA Medal in 2019.

Watch Geoff's Video
Car with a sticker 'My other car is a Pistenbully' and a person holding yellow skis in the snow.
Nine Club Podcast

Listen to Geoff's interview on the Nine Club podcast.

Brown leather gloves with a white label on a blue fabric background
Mt. Bum Elev 1 ft higher than k2 Jess and Brian First Ascent Winter 2026 This video has no audio or spoken content.
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