Men's Mercury Heated Light Layer

Size Guide: Mercury Heated Light Layer

Size	XS	S	M	L	XL	XXL
Chest (Body)	34-36	36-38	39-41	42-44	45-47	48-50
Sleeve Length (Body)	31-32	32-33	33-34	34-35	35-36	36-37
Sleeve Length (Garment)	25.5	26	26.5	27.25	28	28.75
Body Length (Garment)	29.5	30	30.5	31.25	32	32.75

Size	XS	S	M	L	XL	XXL
Chest (Body)	86-91	91-96	99-104	106-111	114-119	121-127
Sleeve Length (Body)	77-82	80-85	82-87	85-90	87-92	90-95
Sleeve Length (Garment)	64	66	67	69	71	73
Body Length (Garment)	75	76	77	79	81	83

The Mercury Heated Light Layer is engineered for adaptive warmth and comfort. Designed with a sleek fit and advanced heating technology, it offers optimal performance in all weather conditions, making it perfect for active lifestyles.

£274.19 £274.19

Packable Design

3 Power Levels

Color

Size Size Guide

XXL

Free Shipping & Returns

Free 30-Day Returns & Exchanges

Engineer’s Notes

Third generation of our Light Layer silhouette (Previous Generations: 2017, 2020)
Carbon nanotube heated back panel provides 10 watts of even heat without added bulk
Three adjustable power levels (cycled with interior Power button): Low (Blue): 100°F/38°C, Medium (Orange): 113°F/45°C and High (Red): 122°F/50°C
Designed for comfortable wear from 32°F/0°C (unpowered) // 20°F/-7°C (with heat), up to 60°F/16°C
1.5 hours runtime at full power with 3000mAH battery (sold separately)
PFC-free water resistant shell; performance insulation stays warm even when wet
2 zippered full-hand pockets
2 zippered interior chest pockets (battery cable in wearer’s left pocket)
Front zip entry with snap-secured covered placket and convertible collar
Gusseted sleeve openings with zip + snap closure for easy donning/watch access
Designed to be packed down into its own front hand pocket
Dynamic Degree Logo on bottom hem appears under UV light
100% Polyester
Made by LeverStyle in Shenzhen, CN

Fit

Standard fit for comfortable wear over a blazer or sweater; your normal size is recommended

Care

Machine wash + hang dry; disconnect and remove battery before wash
Ensure jacket is completely dry before replacing battery

Returns & Payments

Free U.S. Shipping & Easy Returns*
Flat-rate International Shipping & Returns*
View our full Returns & Exchange policy HERE

Multiple payment options available:

Express: Apple, Google, Paypal, Amazon
Shopify: Shop Pay, Shop Pay Installments

*Unless otherwise noted. Final sale items are not eligible for returns or exchanges.

Black / XS

Mercury Heated Light Layer: Your Ultimate Work Travel Companion
**Problem:** Typical jackets are single-climate, single-season affairs - outdoor-only pieces that are often too sporty for office and urban wear.
**Our Solution:** Mercury Light Layer blends the best of blazers and insulated jackets for a sharp look that shines indoors and out, augmented with a packable design and on-demand heat for cozier commutes and effortless one-bag work trips all year long.

On-Demand Heat
A flexible and feather-light carbon nanotube panel provides three levels of instantaneous, adjustable heat - plug in a USB-C battery, hit the power button and get moving.

Travel Ready
Eco-friendly PFC-free water repellent and an innovative packable design make Mercury the perfect companion on daily commutes, cross-country trips and everything in between.

Stats for Nerds
FCC / RoHS / CE Certified
10 Watts of Heat
IPX7 (1m) Rated Waterproof & AATCC Wash Tested
USB-C battery (3000 mAh recommended, not included)
Carbon Footprint: 12 kgCO2e

Mercury Heated Light Layer: Your Ultimate Work Travel Companion

Problem: Typical jackets are single-climate, single-season affairs - outdoor-only pieces that are often too sporty for office and urban wear.

Our Solution: Mercury Light Layer blends the best of blazers and insulated jackets for a sharp look that shines indoors and out, augmented with a packable design and on-demand heat for cozier commutes and effortless one-bag work trips all year long.

On-Demand Heat

A flexible and feather-light carbon nanotube panel provides three levels of instantaneous, adjustable heat - plug in a USB-C battery, hit the power button and get moving.

Travel Ready

Eco-friendly PFC-free water repellent and an innovative packable design make Mercury the perfect companion on daily commutes, cross-country trips and everything in between.

Stats for Nerds

FCC / RoHS / CE Certified

10 Watts of Heat

IPX7 (1m) Rated Waterproof & AATCC Wash Tested

USB-C battery (3000 mAh recommended, not included)

Carbon Footprint: 12 kgCO2e

Durability: Ours vs. Theirs

Feature		Theirs
Wear to Work?	Board Room to Coffee Shop	Varies by Situation
Commute Friendly?	Stretchy & Quick Dry	Restricting, Shows Sweat & Rain
Travel Friendly?	Packable, Sink Washable, Carry-On-Only	Packable, Sink Washable	Wrinkles, Requires Hotel Iron and Check-In Luggage	Wrinkles, Requires Hotel Iron
Machine Washable?	Machine Washable	Dry Clean Only
Durability Tests?	Abrasion, Pilling, Colorfastness & Shrinkage Tested	Colorfastness & Shrinkage Tested	Not Lab Tested
Guaranteed for Life	Repairs & Replacements and Resale Store	Repairs & Replacements	No
Carbon Neutral	Reduced Emissions through Recycled & Bio-Based Materials	Reduced Emissions	No Emissions Transparency

Frequently Asked Questions

What makes your products better than other brands?

Our products are made from a variety of innovative, high-performance materials built to wick moisture, resist wrinkles and stretch in all the right places. Every item is designed to provide next-level comfort, flexibility, and durability, without compromising a sharp, work-ready aesthetic. You can learn more about specific fabric platforms on our Fabric Technology page

Are your pieces machine washable?

“Low-maintenance apparel” is our mantra - all of our garments are machine washable, and most can be tumble dried on low. We do recommend hang-drying suit jackets and laying our sweaters flat to air dry. Always check the care label on each item for specific instructions.

What’s your shipping and returns policy?

We offer free returns on unworn items in their original condition (undamaged, unwashed, tags attached) within 30 days of purchase, and free exchanges for store credit within the first 100 days after purchase, unless marked Final Sale or Exchange Only. Store credit is redeemable online at ministryofsupply.com or in-store. Learn more here.

Where is your clothing manufactured?

Our clothing is made in a variety of locations around the world, including domestically and in Asia. We carefully select manufacturing partners who share our commitment to high-quality craftsmanship, ethical labor practices, and sustainability. All of our production undergoes third-party inspection. Learn more about our factories.

What are your sustainability practices?

We take great pride in our sustainability initiatives - using durable, bio-based and recycled materials, utilizing zero-waste computerized knitting, and incorporating eco-friendly fabrics into many of our designs. We are constantly improving our processes to minimize environmental impact, from garment creation to reaching your doorstep. Learn more here.

Can you help me find my size?

We recommend using the size guides and fit tips available on each product page to find your perfect fit. You can also use the TrueFit widget to determine your recommended fit based on height, weight and body type. Our clothing is designed with a modern fit and generous stretch, so keep this in mind while shopping.

Do you test your products? What tests do you use?

At Ministry of Supply, we rigorously test our products to ensure best-in-class performance, durability and comfort - to that end, each product we make undergoes 50+ ASTM/AATCC tests, including:

Moisture-Wicking Tests to ensure fabrics effectively pull sweat away from the skin, keeping you dry and comfortable throughout the day.
Stretch and Recovery Tests to ensure pieces stretch comfortably and return to their original shape without sagging or losing form.
Temperature Regulation Testing to keep you cooler in the heat, and warm in cooler conditions.
Odor Control Tests to ensure that the fabrics maintain freshness even after prolonged wear.
Wash and Wear Durability Tests to make sure your clothes will withstand daily use and retain their sharp aesthetic for years to come.