Extend your comfort range with the unmatched fit and feel of our Wholegarment® seamless 3D knit and the natural performance of merino. The Burton MINE 77 3D Knit Merino Midlayer Crewneck raise the bar for fit, comfort, and breathability with a seamless 3D-knit that fits and feels better than traditional cut-and-sew construction. We’re talking body-mapped performance for maximum breathability and warmth where you need it most in a seamless build that just feels better.
Gender Neutral Sizing
See size chart to find the size that works best for you.
Relaxed Fit
It’s got that not too tight or too baggy feel in a shorter, boxier cut.
Wholegarment® Seamless 3D Knit
Wholegarment® knit offers a seamless design that fits better and reduces waste over traditional cut and sew construction.
Natural Merino
Merino wool sets you up with a natural mix of warm, soft, breathable, and odor-resistant performance.
Woolmark Certified
Woolmark certification guarantees premium durability, performance and quality.













![Men's Burton [ak]® Helium Stretch Insulated Vest](https://burtonshop.us.com/wp-content/uploads/2026/04/1769086664_1-300x300.jpg)