Grubs CERAMIC 5.0 S5™ Neoprene Waterproof Thermal Wellington Safety Boot

Grubs CERAMIC 5.0 S5™ is the world's first rubber safety boot built with non-metallic materials. Designed for workers who need dependable protection without metal components, it stays warm, dry, and comfortable in wet, cold environments while minimizing cold transfer and metal conduction concerns.

• Non-metallic Ceramic Safety Toe: Complies with BS EN ISO 20345: S5 and contains no metal components, delivering protection without cold transfer or metal conduction.
• Defender 5mm Ballistic Insole: Lightweight and flexible, passes BS EN ISO 20344: 2004 5.8.2 penetration and 5.9 flex resistance tests without the cold of steel.
• 5mm INSUFOAM-ULTRA Neoprene with Calf Height Rubber: Provides all‑round warmth and a secure, comfortable fit up the calf for added protection against cold winds and moisture.
• 4mm Puncture-Resistant Rubber Overlay: Extends durability across the full foot area, resisting punctures and flex cracking while maintaining flexibility.
• 6mm Nitrocell Footbed: Cushioning with a unique million-microscopic nitrogen bubbles system to insulate from cold surfaces and enhance comfort.
• TREDZ™ (DURAPRENE®) Outsole: Superior grip on a variety of surfaces; oil resistant and designed to work with the natural foot motion, with TM144 slip resistance.
• HEXZORB™ Shock Absorption: Hexagonal heel component molded into the outsole to dissipate shockwaves up through the leg, reducing fatigue during long shifts.
• SUPER-DRI™ Wicking Linings: Thousands of fiber loops wick moisture away from the foot, keeping you dry; paired with the 5.0 INSU-FOAM ULTRA layer for comfortable, sweat-free wear.
• 5.0 INSU-FOAM ULTRA Comfort Layer: Adds a breathable, cushioning layer that enhances comfort and helps manage heat buildup during extended wear.
• Waterproof Thermal Design: Neoprene-based construction keeps feet dry in rain, mud, and immersion risks, with a comfort rating from -20ºC to +20ºC.
• Size Range & Calf Fit: UK sizes 6–12 with precise boot height and calf width measurements per size (e.g., UK6 380mm height, 410mm calf circumference; UK12 410mm height, 440mm calf circumference).

These features translate into real-world benefits: a non-metallic build reduces cold transfer and metal-related restrictions, while the ceramic safety toe and S5 design deliver reliable protection across wet, cold, and demanding work sites. The combination of advanced insulation, moisture management, and slip-resistant outsole keeps feet warmer, drier, and steadier on oily or uneven surfaces. Ideal for construction, utilities, warehousing, maintenance, and outdoor industries where warmth, dryness, and non-conductive safety footwear matter. To extend boot life, rinse off mud, air-dry away from direct heat, and store in a cool, dry place.