In our ongoing quest to provide the best habitat for our beloved hermit crabs, we recently tried the QEQEKAKA 2 PCS Muffin Snail Large Hermit Crab Shells. Measuring between 2.7 to 3.5 inches, these natural sea conchs cater perfectly to our crabs' needs for comfortable, spacious homes. The shells' opening size of 1 to 1.5 inches ensures they're just the right fit for our little friends. Upon unboxing, we were instantly impressed by their vibrant colors and intricate textures, which not only serve as a functional dwelling but also enhance the aesthetic of our tank. Our crabs quickly took to their new shells, and we appreciated the variety these shells brought to their environment. Overall, we find the QEQEKAKA shells to be a worthy investment for any hermit crab lover looking to provide a cozy and attractive shell option for their pets.