Insulated Jackets & Coats

Understanding Fill Weight and Temperature Range

Fill weight determines warmth. Lightweight insulated jackets (60-100g synthetic fill per m²) suit temperatures around 5-10°C or high-activity roles where you're constantly moving—warehouse picking, delivery driving, active outdoor work. Midweight options (100-200g) handle most UK winter conditions down to freezing, balancing warmth with breathability for moderate activity. Heavyweight insulated coats (200g+) tackle extreme cold below -5°C or static roles like security, traffic management, or extended freezer work. Your activity level matters as much as temperature—physical labour generates body heat, so you need less insulation than someone standing still.

Waterproof vs Water-Resistant Construction

Waterproof insulated jackets use membrane technology (coated fabrics or systems like Gore-Tex) that block liquid water whilst releasing sweat vapour. Ratings measured in millimetres indicate water pressure resistance: 5,000mm handles light rain, 10,000mm manages moderate precipitation, 20,000mm+ tackles heavy downpours. The insulation sits protected between waterproof shell and lining, maintaining thermal performance even in wet conditions—critical in UK weather where cold comes with rain or sleet. Water-resistant options use DWR (Durable Water Repellent) coatings that make water bead and roll off. Perfect for dry cold stores or brief outdoor exposure. They cost less, breathe better, weigh less, but sustained rain eventually soaks through.

Breathability and Moisture Management

Breathable fabrics prevent the clammy feeling that ruins cheap insulated coats. When you work hard, your body produces moisture. If it can't escape, it condenses inside making you cold and uncomfortable. Breathability ratings (grams per m² per 24 hours) indicate moisture transmission: 5,000g suits light activity, 10,000g handles moderate work, 20,000g+ manages high-output physical labour. Features like underarm vents, back vents, and mesh-lined pockets enhance airflow, dumping excess heat during intense activity. This matters enormously in freezer environments where moving between -30°C and ambient temperatures causes rapid condensation.

Work Features and Practical Design

Products in this collection include work-focused features: • Reinforced shoulders, elbows, lower back—withstand abrasion from tool belts and kneeling • Multiple pockets (chest, hand, internal)—secure tools and essentials • Storm flaps over zips—prevent wind penetration • Adjustable cuffs and drawstring hems—seal out cold air • High collars with chin guards—protect neck from wind • Hi-vis elements—maintain visibility on sites and roadsides. Fit matters: you need room for mid-layers (thermal base or fleece) without restriction. Sleeves should reach wrists when arms extended. Hem should sit below waist, covering lower back when you bend.