4 Live 'Purple Pincher' Hermit Crabs shipped to your house right now. We consider these a small/medium size and will be up to 1.5 inches. Includes 1 extra shell for each. Their shells are very pretty - they are natural shells that have been cleaned and polished. We also offer in our Amazon Store: a single live hermit crab, 2 crabs, 3 crabs and also complete hermit crab kits. Hermit Crabs are not actually ‘hermits’. They are very social creatures and like company. Make sure to have at least 2 in your habitat. Do not overcrowd them though, we suggest no more than 2 small crabs in a 2 gallon habitat. GUARANTEED! LIVE arrival is guaranteed. DO NOT ORDER if below 40 degrees or above 85 degrees in your area. Our live arrival guaranty will be void if ordered during these temperatures. YOU ARE RESPONSIBLE FOR CHECKING TEMPERATURES IN YOUR AREA to be sure your crabs arrive alive. We ship this item via USPS (post office) within 4 business days.