The insole design for the J-41 shoes are as follows: Contoured Footbed, Quick Drying and Odor, Free Sock Linings, and Jeep® Memory Foam Footbed that cradles the feet. To select a size, you must first chose from the color drop down. Then, you will be able to chose the size based on availability. If you have further questions, please contact a product specialist at gaiamprodspec@gaiam.com or 1-877-989-6321.