The N-Ferno Hand Warmer packs are non-toxic and made with all-natural ingredients

6kg maximum working capacity with a 2:1 safety factor

Thumb crotch area is reinforced with a Kevlar patch for longer wear

Hardware MaterialZinc plated alloy steel

Endura High Heat Glove (1 dozen) Size:One size The N-Ferno Hand Warmer packsWork with confidence in high heat welding applications with our Endura welder's gloves. We've combined heavy duty, chrome tanned leather with thick, thermo foam lining for a glove with great heat protection and dexterity. Strapped thumbs for rugged durability and 4" gauntlet cuffs. Kevlar sewn throughout for seam integrity and ability to withstand spark, as Kevlar will not drip or melt around open flame. Critical seams are welt protected. Also