Helle knives are designed to retain their sharpness as a lifelong outdoors companion. But it is still important to take care of your knife and its sheath.
The Handle. Dry the handle with a soft cloth if wet and wax occasionally.
The Sheath. The leather needs to be impregnated occasionally with colourless impregnation agent (grease or wax) to keep supple. Dry the sheath carefully in room temperature if it becomes wet.