Product Features
Technical semi crampon-compatible footwear for mountaineering activities. Innovative materials make Tengu GTX a lightweight, high performance boot ideal for use in dynamic situations on mixed terrain. The new Vibram® Curcuma outsole, combined with the exclusive AKU Exoskeleton midsole, offers great stability and precision during climbing and approach trekking.
UPPER: nylon + suede
UPPER PROTECTION: liba® smart pu
LINING DESCRIPTION: gore-tex® performance comfort
OUTSOLE: vibram® curcuma
MIDSOLE: double density pu exoskeleton
LASTING BOARD (STIFFNESS): carbon fiber + die cut eva (x stiff)
FOOTBED: custom fit pro alum
WEIGHT (½ PAIR size 8): 725
SIZE RANGE (UK): 4½ – 12





Delivery Info
Get more information about our delivery options, returns policy and easy to use returns form
Read moreSize Guides
Get a full overview of our sizing across our range of products.
Read moreAsk a Question
Find out everything you need to know to shop Aku by searching our Frequently Asked Questions
Read more