The STUDSON SHK-1 Full Brim Non-Vented Dual Cert is built for job sites where electrical hazard protection is required — and where both US and Canadian compliance is non-negotiable. Carrying dual SEI-certified credentials — ANSI/ISEA Z89.1-2014 (R2019) Type II Class E and CSA Z94.1-15 Type II Class E — this safety helmet is rated for electrical environments up to 20,000 volts AC and meets the lateral impact requirements of both standards. One SKU. Two markets. The interior mirrors the Dual Cert vented model — a Koroyd®-dominant construction covering the full inner shell, with Ionic+ pad sets at the top, front brow, and rear dial. The non-vented shell maintains the Class E electrical rating while the Koroyd® open-cell structure still supports airflow across the interior surface.

• Koroyd® Interior Construction: Full inner shell lined with a welded tube structure that crumples instantly on impact to absorb maximum force (meeting CSA Z94.1-15 Type II and ANSI/ISEA Z89.1-2014 Type II Class E standards for direct and angled impacts).

• Class E Electrical Protection: Features a non-vented shell engineered for utility workers and electricians, certified to protect against electrical hazards up to 20,000 volts AC.

• Ionic+ Comfort Pad System: Moisture-wicking, antimicrobial pads located at the top, front brow, and rear dial to maintain comfort during long, high-heat shifts.

• Twiceme® NFC Technology: An embedded, worker-preloaded NFC chip that allows first responders to instantly scan and access emergency contacts and medical info with any NFC-compatible device—no app required.

• Fidlock® Magnetic 4-Point Chinstrap: A glove-friendly magnetic closure system with a 4-point configuration that ensures the helmet stays safely positioned. Quick to fasten and easy to release.

• Perfect Fit System: A front and rear dial adjustment system providing a consistent, secure fit for head sizes ranging from 53 to 63 cm.