Cryo Shipping Shippers ColdStash dry shippers come in sizes available to ship anything from a single vial to a payload of multiple boxes and cassettes, with neck sizes to accommodate your payload. Private Label/Branding Private labeling and branding are available for your fleet of dry shippers, including custom paint color and logo. Custom Racking No matter what you’re trying to ship, ColdStash has a solution for you. From vials to cassettes to foam canisters, we can design a custom rack to optimize use of your dry shipper payload area.