Peak Performance Helium Down Jacket - Men's Size:XL Heating output can be controlled

Heating output can be controlled with the free smartphone app(9 heating levels)or directly on the lithium pack(3 heating levels)

0 ski/walk mechanism provide for completely natural movement for effortless ascents

and performance on the ski down

K2 designed the Maysis to perform like a workhorse and fit like a glove

Operating temperature: -25° to +45° Celsius (-13° to +113° Fahrenheit)

Peak Performance Helium Down Jacket - Men's Size:XL Heating output can be controlledThe Helium range, known for its iconic quilted pattern, has remained a bestseller for over a decade. This hybrid hooded jacket is exceptionally lightweight and easily packable, featuring stretch jersey panels and sleeves to allow full freedom of movement. Its primary fabric is both wind and water repellent, paired with premium 90 10 down insulationideal for staying warm during chilly outdoor activities. All down used by Peak Performance is responsibly