Guy Cotten Isomax CAP Jacket Yellow/Black – Marine-Rated Oilskin Jacket
Professional all-weather marine jacket with advanced insulation and waterproofing for harsh Irish coastal conditions
- Fabric construction: Cap-Coz on upper body and sleeves, Nylpêche on high-wear zones
- Cap-Coz: 110 g/m² polyester jersey + 1-side PVC coating 370 g/m² (total ≈ 480 g/m²)
- Nylpêche: 150 g/m² polyester + double-sided PVC coating 335 g/m² (total ≈ 485 g/m²)
- High-frequency welded seams for 100 % waterproof seal
- Patented Isolatech panels to reduce interior condensation on shoulders, chest, upper back
- “MAGIC” hood: moves with the head, maintains visibility, allows wearing a hard hat
- Kimono-style cut with extended back length for extra coverage when bending
- Heavy-duty front zip under a dual self-grip storm flap
- Elasticated inner cuffs with snap fasteners to seal out spray
- PPE Certification: EN 343 (Category I) for rainwear protection
- Available sizes: XS, S, M, L, XL, XXL
- Colours: Yellow/Black (shown), also available in Yellow/Orange, Yellow/Blue
The Guy Cotten Isomax CAP Jacket is a high-performance marine oilskin designed for fishermen, sailors and coastal users in Ireland. It combines abrasion-resistant Nylpêche and comfortable, insulating Cap-Coz fabrics to deliver waterproof protection and reduce internal condensation. The patented Isolatech system keeps you drier, while the MAGIC hood ensures excellent visibility even when wearing head protection. With welded seams and extended back coverage, this marine-rated jacket is ideal for serious use around Irish coasts and offshore work.


