The handle material is made of acrylic and is free of radioactivity, phosphorus and other toxins. The light energy is absorbed by natural light, artificial light and released again at dusk and in absolute darkness in the form of light.Blade length: 145 mmBlade thickness: 3,5 mmTotal length: 265 mmKnife weight: 227 gScales: Acrylic - FluorescentBolster: brassSteel / hardness: 440C / 57-59 HRCSheath: black leather with snap fastener closure