This case provides great storage for boaters when used to carry phones, wallets and boat licenses. And this case has been used in some unique environments. Bio-Cooler used this model as a hard shipping case to carry vials and keep them cool in transport. The custom case was molded with a white bottom and clear see-thru lid, using two types of material - ABS and polycarbonate. Another company has used the T2500 to hold an electric motor for bilge pumps in sea kayaks. As part of our small protective cases line, custom cases can be made with see-thru lids and custom colors.