Live Butterfly Kit: School sized-Free Certificate for 30 Painted Lady Caterpillars: 18" Pop-Up Cage 3 Live 'Purple Pincher' land Hermit Crabs shipped to your house right now. We consider these a small/medium size and will be up to 1.5 inches. Includes an 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: single live hermit crab, and also complete hermit crab kits. www.amazon.com/shops/naturegiftstore 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 crabs in a 2 gallon habitat GUARANTEED! We guarantee LIVE arrival of your hermit crabs. ****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 hermit crabs arrive alive.**** We ship this item via USPS (post office) within 4 business days.