Heated Vest Sizing and Fit: A Buyer’s Guide

Heated vests are the entry product for most heated apparel brands — low MOQ, broad appeal and year-round layering use. Getting the size curve right is the difference between low returns and a customer service nightmare.

The Fitting Problem Is Real

A heated vest must sit close enough to the body for efficient heat transfer, yet leave room for a mid-layer. That means your grading must assume the vest is worn over a sweater or fleece, not directly on a t-shirt.

Recommended Approach

Size your vest pattern to the same chest measurements as your base layer line, then add 4-6cm of wearing ease at the chest. Verify with fitting sessions on two body types per size before approving the size run.

Standard Size Ratios for B2B

• US/EU unisex lines: S 10% / M 25% / L 30% / XL 20% / 2XL 15%
• Workwear channels skew larger: cut more XL-3XL than fashion lines
• Women’s-specific lines: offer XS and shift the curve down one size

Details That Reduce Returns

• Side stretch panels or adjustable hems to cover mid-layer variance
• Battery pocket positioned to balance weight, not hang on one side
• Clear size chart in cm/inches on every product page and box

Ready to develop your own heated apparel line? Contact our team for MOQ, sampling options and a production plan.