Premium Material: hermit crab moss pole is made by hand using real premium forest moss as the raw material. You will receive a 12″ long moss creeper pole for hermit crab climbing. Robust and Durable: hermit crab moss pole is made of 4mm horticultural aluminum rods as the inner core, which are strong and durable without rusting, and can be easily bent repeatedly, You can adjust the height of the climbing bar yourself.