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Xpander Pak Mailer Video
Xpander Pak Mailers
Watch the All-In-One Mailer Expand!

Easy-Open Pull-Tab Video
Easy-Open Pull-Tab
Frustration-free Packaging for your Customers

3D Box Liner Video
3D Box Liner
Demonstration for Cold Chain Pack-Out

Xpander Pak®

Xpander Pak Expanding

The all-in-one protective mailer!

Cushioning-on-demand, when you need it. Simply pierce outer film of the foam expansion mailer and watch as it expands up to 5x times its original size. "Lock-In" your product and secure the contents exactly where you place them, no void-fill needed.

Xpander Pak® foam expansion mailers require less space versus traditional EPS coolers and are an effective replacement for small shipments, clinical samples, etc. Whether you're shipping high-value components or temperature sensitive pharmaceuticals that require extended duration shipping time, Xpander Pak® can save you a bundle. In fact, for shipments under 1 cubic foot, Xpander Pak is a direct replacement for EPS Foam. Tough and durable on the outside, ultra soft and insulating on the inside.

Watch our Time Lapse Video demo of an Rx² grade mailer expanding then put to the test.

For official testing results, see our Assistance page

Xpander Pak Load & Seal


Item #GradeDescriptionQTY /
Wt. /
Case (Lb)
1 PLT2-12 PLT's
9x11"BEP0911AStandard1" - Foam Expansion Mailer1002419$2.17$217.00$1.83$183.00
BEP0911BRX1.375" - Foam Expansion Mailer1002422$2.44$244.00$2.05$205.00
BEP0911CRX21.625" - Foam Expansion Mailer722424$3.72$267.84$3.39$244.17
12x14"BEP1214AStandard1" - Foam Expansion Mailer483016$3.09$148.32$2.61$125.45
BEP1214BRX1.375" - Foam Expansion Mailer483016$3.66$175.74$3.10$148.78
BEP1214CRX21.625" - Foam Expansion Mailer482029$5.24$251.42$4.76$228.61
14x18"BEP1418AStandard1" - Foam Expansion Mailer303015$4.23$127.01$3.59$107.70
BEP1418BRX1.375" - Foam Expansion Mailer303015$5.36$160.73$4.53$135.76
BEP1418CRX21.625" - Foam Expansion Mailer302022$7.16$214.81$6.51$195.37
*Call for distributor pricing
*Other options available upon request: Call for pricing

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Patent/Trademark Statement: Thermal Shield®, Xpander Pak®, Nature Ice™, Growler Pak®, Nature-Pack™, BioMailer®, BioCooler™, Pallet Shield® & Cargo Shield® are federally registered trademarks. All other trademarks, copyrights or logos sited herein are the property of Thermal Shield® products. U.S. Patents 5,820,268 / 6,007,467 / 6,080,096 / 7,021,524 / 7,140,773 with additional patents pending.