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Now Made In Italy

Theorem is an exercise in balance; between fine Merino wool and the heavy metal zipper, between casual comfort and sophisticated detailing, and between modern technology and natural heritage.

An elegant reimagination of the classic pullover hoodie, Theorem blends refinement with capability for all tomorrow's adventures.





100% Merino Wool

Ribbed Knit



Medium : 


Elbows reinforced with TAD AC fabric

Made in Italy



Description XS S M L XL 2XL
Neck width seam to seam 7 7.25 7.5 7.75 8 8.25
Chest 1” Below Armhole 32 34 37 40 43 46
Sweep 31 33 36 39 42 45
Sleeve length from CB (3-Points) Long 31.75 32.5 33.5 34.5 35.5 36.5
Bicep (1” below armhole) 11.25 12 13 14 15 16
Sleeve opening Long 6.625 7 7.5 8 8.5 9
Center Back length 24 25 26 27 28 28.5
Hood height at side 13 13.25 13.5 13.75 14 14.25
Hood width (half measurement) 9 9.25 9.5 9.75 10 10.25


Integrated Amphibious Cloth reinforcement panels on the elbows and lower arms provide enhanced service life expectancy.

Fully Fashioned

Fully Fashioned

Theorem’s fully fashioned hood offers additional warmth, while a chest zipper provides easy venting.

Active Merino

Active Merino

Merino has a unique ability to regulate body temperature. During exertion or warm weather, it wicks away moisture from your body and releases it on the surface. This evaporation mechanism has a cooling effect, enhancing comfort while keeping you dry. To help you stay warm in cold weather, the air pockets in the Merino fibers trap body heat to provide insulation. This adaptive capability makes merino wool garments highly flexible, which is critical if you need to count on a small set of gear to handle unpredictable conditions. Merino is also naturally fire retardant and odor resistant, providing a measure of assurance when outdoors or in the field.

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