Our impregnated shoe laces comes in 5 lenghts. Chosing length depends on the boots' size and shaft height. Generally, laces up to 160cm will fit our low boots, in addition to mid-high boots in women's sizes. 180-200 cm fits hiking mid in men's sizes and hiking high/mountain. 220 cm is intended our hunting boots. Please note that these are only general guidelines. If you're unsure which lace length to choose, we recommend measuring the laces already in your boots to ensure proper length.