Stormtech ST258 Sierra thermal jacket

Engineered for high performance with reduced weight, the Sierra thermal jacket is the ideal layering piece for any outdoor adventure, providing lightweight thermal efficiency. It features Stormtech Thermal Shell™ insulation and a DWR (Durable Water Repellent) finish to keep you warm and dry while repelling wet weather. A full-length internal storm flap adds extra protection against the elements, while the quilted design ensures optimal heat retention without bulk. Built with feather-free insulation, this jacket provides sustainable warmth, with elasticised cuffs to help lock in heat, ensuring you’re ready for anything, whatever the weather.

Key features

• STORMTECH Thermal Shell™ insulation
• Water-repellent finish
• High-performance windproof outer shell
• Internal full-length storm flap
• Elasticised cuffs
• Adjustable hem
• Zipped handwarmer pockets
• Decoration access

Material, fit and care

• Fabric: 100% Polyester pongee. Lining: 100% Polyester
• Fabric weight: 90gsm
• Fit and sizing: S 35/38 M 38/41 L 41/44 XL 44/47 2XL 47/50 3XL 50/53 4XL 53/56 5XL 56/59
• Care: Machine wash cold. Gentle cycle with like colours. Do not use softeners. Do not bleach. Hang to dry. Do not iron. Do not iron decoration. Do not dry clean.

Standards and accreditations

• WRAP
• Oeko-Tex Standard 100