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The Helly Hansen Alta Hi-Vis Waterproof Rain Jacket is a durable, site-ready outer layer for ground investigation and construction professionals working in exposed outdoor conditions. EN ISO 20471 compliant hi-vis rating ensures visibility on active construction and investigation sites. Waterproof and windproof construction keeps you dry and comfortable during long site shifts. Suitable as standard PPE for trial pit supervision, borehole logging, and site walkover surveys.