For most customers, the insulated shipper in which we sent vials to you initially can be used for returning samples.

Ship to:

Jonah Ventures

5485 Conestoga Ct #210

Boulder, CO 80301

(720) 515-6624

Make sure to email us tracking information (

For frozen samples in an insulated shipper, 2-day express is usually sufficient. Fed Ex and UPS are typically better than USPS for shipping.