SteadyPac Cube · Cube+ / Reusable Cold Chain System

When an excursionisn’t an option.

One box, one pack-out, one SOP, validated across +40°C and −30°C, covering refrigerated, frozen, and CRT in a single universal configuration that runs year-round without seasonal changeover.

SteadyPac Cube, universal temperature-controlled shipping box
SteadyPac Cube packed for shipment
One SOP, all year round

The configuration that survives a heatwave is the one that survives a freeze

Seasonal requalification costs time, money, and added complexity your team has to manage, train for, and audit. The SteadyPac Cube eliminates all of it, one system, every season. Pack it the same way in July as you do in January. Heatwave, deep freeze, or anything in between, SteadyPac Cube and Cube + will maintain your desired temperature from the first mile to the last.

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Summer ambient profile, ISTA 7E · 7D pass

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Winter ambient profile, ISTA 7E · 7D pass

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Identical pack-out across all seasons

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No seasonal swap of components

Built for

Made for lanes that can’t fail.

The Cube and Cube+ are built for the shipments where a single excursion isn’t an inconvenience, it’s a shipment deviation, a failed trial, or ineffective medication reaching a patient.

One deviation. One invalid trial.

A single deviation can invalidate a trial arm and trigger a regulatory hold. IMPs are often irreplaceable mid-study. SteadyPac Cube and Cube+ ensures every shipment arrives within protocol, with the documentation to prove it.

01

Validation documentation included with every shipment

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No seasonal requalification between trial phases

03

Performs across all ambient conditions and lane profiles

The differentiator

It all starts withthe tub.

A patented, single-piece inner tub does the work six loose vacuum insulated panels can’t. It holds the PCM plates in place, protects the panels from puncturing, contains spills, and survives years of reuse.

SteadyPac Cube patented single-piece inner tub
01 · VIP Protection

It protects your VIPs from popping.

Vacuum insulated panels are the most expensive component in the system and the most vulnerable. The rigid tub with flange provides a protective barrier against puncture and impact, ensuring the insulation is never compromised and the system remains reusable for years.

02 · Containment

Five sealed sides, not six loose panels.

Six separate foam panels leave gaps at every seam. Our seamless five-sided tub contains spills, critical for hazmat, blood, and virus sample shipments.

03 · Dry-Ice Ready

Simplify your dry ice shipments.

Tare the tub on a scale, fill with dry ice to your exact target weight, and lower it in by the handles. No spillage, no guesswork, no loose pellets in the payload cavity.

04 · Drop Test

Engineered to handle drops.

The rigid tub acts as an internal skeleton and the flange spreads load on impact, maintaining structural integrity under drop conditions, ISTA 3A drop tested to prove it.

05 · Reuse

Reusable by design. Sustainable by default.

Lift out, wipe down, sanitize; ready for the next shipment. A five-year service life turns a single-use cost into a returnable asset.

Anatomy of a shipper

Five components.One qualified system.

Exploded view of the SteadyPac Cube
VIP Lid

Integrated VIP lid

The lid features a vacuum insulated panel (VIP) and foam that creates an air-gap barrier against the tub flange, keeping the same thermal performance as the walls.

The Tub

The patented tub

The five-sided tub works as a system with the PCM plates; it's washable and built to reuse. It protects the VIPs, contains spills, and absorbs impact to meet drop-test and real-world requirements.

The Box

Protective shell

The entire solution is protected by a drop-tested outer shell, built with carry handles, tamper-seal grommets, and integrated data-logger slots. Designed throughout for reuse, with a lid that opens clean without cutting.

PCM Plates

PCM Plates

PCM plates lock into the patented tub with a dual-beveled fit that prevents misassembly. Color-coded by temperature, they work across both Cube and Cube+, less inventory, less cold storage, lower shipping costs.

VIP Walls

VIP wall panels

Every side is lined with a silica-core vacuum insulated panel, the highest-performing insulation available. Protective foam keeps each VIP secure, dampens vibration, and eliminates air gaps against the tub.

Interchangeable PCM plates

One plate family.Eight coolers.

Four plate sizes span the entire range. Move up from a Cube to a Cube+ and your team manages the same refrigerant, less inventory, less to qualify, fewer ways to get it wrong.

CubeSquare
One plate
Cube+Rectangle
3L5L
10L14L
16L22L
28L37L

Double-beveled

Ambidextrous geometry means there's no wrong way to insert a plate, packers move faster and make fewer errors.

Self-locking

Plates seat and lock into the tub so the thermal pack stays put through handling, transit and inspection.

Color-coded

Each temperature profile gets its own color, so the right plate for the right lane is obvious on the line.

Reusable

Wipe down, recharge in any standard freezer or fridge, and run again, built for hundreds of cycles, not one.

Validated, not estimated

Proof for three lanes.

Thermally validated to 144+ hours across three temperature profiles, with the lightest qualified solution to pass the ISTA 3A drop test.

2–8°CRefrigerated

The standard cold chain band for biologics, vaccines, and specialty pharma.

15–25°CControlled Room Temp

CRT lanes held steady through summer and winter ambient swings.

−15 to −25°CFrozen

Deep-cold shipments qualified across the frozen range, dry ice compatible.

ISTA 3A · 7D · 7EDistribution + thermal profiles
Logger & GPS slotsBuilt into the carton
No expiryVIP and PCM components don’t age out
Choose your format

Cube or Cube+.

The Cube.Universal cold chain performance.

Why Choose?

The Cube is built for cold chains that can't afford to fail, VIP insulation, precision PCM plates, and a reusable tub in one universal platform. Any temperature, any payload, any shipment.

Operator

One universal configuration. The same pack-out process every season, one SOP for your entire team. Color-coded PCM plates lock in one way, the right way, so there's no guesswork and no errors.

Footprint
Validated Duration
144+HRS
Payload
4VOLUMES
SteadyPac Cube shipper
Why reusable

Built to ship.Built to return.Built to last.

Built to protect and built to last. The tub keeps the VIP panels safe, washes clean after every shipment, and the PCM plates recondition and go straight back in. Hundreds of cycles, zero compromise.

Single-use shippers charge you the full system cost every cycle. The Cube charges you for the carton. The tub, VIP panels and PCM plates don’t expire, and they don’t get thrown away after one trip.

Service life

Service life measured in years, not shipments.

Built to handle daily use, the return trip, and everything in between. Every component is tested and designed to maintain performance year after year.

No expiry

Always effective. Never expired.

PCM plates recondition and perform like new, every time. No expiry. No degradation.

Replacement

Replace parts, not the system.

If a component is lost or damaged, order a replacement and keep shipping. Every SteadyPac component is individually replaceable, protecting your investment and keeping your cold chain running.

SteadyPac Cube in use
SteadyPac Cube components
SteadyPac Cube reuse cycle
Documentation

Documentationis not a follow-up.It’s part of the SKU.

Every TempAid mailer comes with qualification reports standard, ready to meet your regulatory and accreditation requirements.

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Qualification summary

Temperature chamber test results, peak external temperatures, and confirmation of performance

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ISTA test report

7D/7E temperature profile data and internal temperature results delivered in a fully audit-ready report

03

ISTA 3A drop test

Validated to withstand real-world shipping hazards, drop, compression, and vibration testing that confirms your mailer and its contents arrive intact.

04

Pack-out SOP card

A single card with one-page, step-by-step instructions; insert, seal, ship. Everything your team needs to pack out correctly, every time.

05

Return / reuse instruction

PCM mat retrieval, recycling stream per region

Qualification summary and ISTA report that ship with every SteadyPac Cube
What the clients are saying
“Since we switched to TempAid’s validated mailers, on-time deliveries are up 30% and we walked into our last audit with the file already built.”

Director of QA, Global Biotech

Talk to a cold-chain engineer

Ready to qualify your shipment?We can help.

Tell us your payload, your route, and your temperature range. We’ll match you to the right configuration, run it against your lane profile, and get a sample in your hands. The qualification file comes with it.

Get in touch