For loose snow, crampons are less suitable, and snowshoes or skis may be preferred. The boots can be used for skis as well as snowshoes. The season for guided trips with snowshoes or skis starts in March. The wood can also be made into spears, bows, arrows, snowshoes, sleds, and other items. Norwegian immigrants used skis ("Norwegian snowshoes") in the US midwest from around 1836. Hikers who take to snowshoes in winter find trekking poles especially useful. Equipment such as snowshoes, mountain bikes, camping supplies, and backpacking gear are available for rent. The bonder run over it on ski and snowshoes. Children learned to ride a reindeer, sleigh, and use snowshoes at a very young age. Traditional snowshoes have a hardwood frame with rawhide lacings. In winter, snowshoes and dogs aided the hunt. Pedestrian transportation is on foot in summer and snowshoes in winter. The hard wood was useful for making hunting and fishing tools, snowshoes, pipes, and furniture. The snowshoes proved to be awkward but effective on the arduous climb. The rawhide webbing of traditional snowshoes, as noted above, needs regular waterproofing.