Welding and heat-resistant aprons protect workers from sparks, molten splash and heat during welding and other high-heat applications. They come in standard, split leg and waist styles. The standard style protects the torso and thighs, while the split leg style covers the torso and then wraps around the worker's legs for added protection. The waist style covers only the waist and offers more limited protection. Welding and heat-resistant aprons are typically made of leather, silicone, Kevlar or Thermonol.