OriGen O-Wrap overwrap bags are a safe, economical way to protect other bags and products used for cryopreservation. The O-Wrap bag is made of EVO copolymer, developed specifically for direct immersion in liquid nitrogen, and combines tough, low-temperature durability with excellent clarity, flexibility, impact and puncture resistance.

O-Wrap overwrap bags are sized for use with CryoStore Freezing Bags, but may be used with any other freezing bags.

Advantages of the O-Wrap

  • Easily sealed with standard RF or inexpensive impulse heat seal equipment
  • Greater than 90% optical transmission, making inspection of the contents easy, even when frozen
  • Labels, aliquots, samples, and other materials can be placed inside the O-Wrap prior to cryopreservation, allowing them to remain with the bag throughout the freezing and thawing cycles. A two-pocket O-Wrap is also available to ease further the storage of labels etc.


Code Product Size Pack Size
W(cm) L(cm)
OW0419 Overwrap for sample vials etc 4cm 19cm 10
OW0909 Overwrap for CS25 and Thermogenesis bag 9cm 9cm 10
OW0918 Overwrap for CS25, CS50 and PL07 bags 9cm 18cm 10
OW1430 Overwrap for CS250, CS500, CS750 and PL30 to PL220 bags 14cm 30cm 10
OW1430T Overwrap with two pockets for CS250, CS500, CS750 and PL30 to PL220 bags 14cm 30cm 10
OW1936 Overwrap – general use 19cm 36cm 10
OW1950 Overwrap for CS1000 and PL325 bags 19cm 50cm 10
OW2436 Overwrap for CS2000 bags 24cm 36cm 5
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