Studson SHK-1 Non-Vented Class E, White - L/XL

STUDSON SHK-1 Non-Vented Safety Helmet

The SHK-1 Non-Vented is built for environments where a sealed shell isn't optional. Class E rated to 20,000 volts, it carries the same Koroyd impact core, Twiceme NFC, and Fidlock chin strap system as the vented model — without the openings that disqualify vented helmets from electrical applications.

Built for electricians, utility workers, and anyone working in or around high-voltage environments.

Key Features

Class E Non-Vented Shell Fully sealed ABS shell rated to withstand up to 20,000 volts. No vents means no conductive pathways — the right choice for electrical and high-voltage job sites.

Rear Dial Fit System One-handed micro-adjustment with an extendable front brow pad for additional fine-tuning. Dial in your fit at the start of the shift.

Accessory-Ready Compatible with the SHK-1 Half Shield, Telescoping Headlamp, Ear Defenders, Neck Shade, and more. Same accessory platform as the vented model.

Protection Technology

Koroyd® Welded Tube Core Koroyd's welded tubes crumple instantly on impact, absorbing maximum force and minimizing energy transferred to your head. Engineered to protect against both direct and angled impacts — may reduce the risk of suffering a life-changing injury. ANSI-certified for industrial use.

Twiceme® NFC An embedded NFC chip stores emergency contact and medical information. Accessible instantly by first responders with any NFC-enabled device — no app required.

Fidlock® 4-Point Chin Strap Magnetic buckle fastens and releases with one hand, even with gloves on. Adjustable nylon straps, four anchor points, secure fit.

Fit & Sizing

The SHK-1 Non-Vented is available in two adjustable sizes:

L/XL — 58–63 cm (recommended) Our universal size. Fits the majority of head sizes, including those at the upper end of M/L. If you're on the edge between sizes, size up to L/XL.

M/L — 53–59 cm

 Weight: 495 g

Certifications & Compliance

ANSI/ISEA Z89.1-2014 (R2019) — Type I & Type II, Class E

EN 12492:2012 — Mountaineering equipment standard covering:

- Shock energy absorption (front, lateral, and rear — Clauses 4.2.1.2–4.2.1.4)

- Penetration resistance (Clause 4.2.2)

- Retention system strength (Clause 4.2.3)

- Retention system effectiveness / roll-off (Clause 4.2.4)

Note: This helmet meets ANSI/ISEA Type II standards (United States). It is not certified to CSA Z94.1 Type II (Canada). Class E — rated to 20,000 volts. Always verify helmet class matches your site's assessed electrical hazards before use.