Transit-Tested Packaging (ISTA 3A)

ISTA 3A Certified Protection, now in paper

When you’re shipping glass, “eco” isn’t enough – you need proof it will survive the courier network.

Flexi‑Hex bottle packaging, supplied in New Zealand by Woodhill Distribution, is independently tested to the ISTA 3A transit standard, so you can cut plastic without crossing your fingers every time a carton leaves the warehouse.

Flexi‑Hex + ISTA 3A: Proven Transit Performance

Most Flexi‑Hex bottle packaging solutions are ISTA 3A certified, meeting rigorous industry standards for transit testing.

That gives NZ wineries, distilleries and premium e‑commerce brands three key advantages:

  • Confidence in transit: Independent testing shows that the Flexi‑Hex sleeve plus outer box system is engineered for courier and export networks, not just a nice unboxing moment.

  • Less damage, less waste: By keeping bottles protected, you reduce write‑offs, resends and the emissions tied to shipping replacement orders.

  • A clear story for stakeholders: You can point to a recognised test standard when you’re talking with logistics partners, insurers or internal teams about risk and packaging changes.

Where ISTA 3A Certified Flexi‑Hex Fits Best

We typically recommend ISTA 3A certified Flexi‑Hex solutions for:

  • Direct‑to‑consumer wine and spirits shipments (single, twin and triple bottle packs)

  • Online gifting and club/loyalty shipments where presentation and protection both matter

  • Trade samples and limited releases heading to media, distributors or key accounts

If you’re sending regular courier or export parcels of fragile products, ISTA 3A certification helps de‑risk the move to more sustainable packaging.

How Woodhill Can Help

As Flexi‑Hex’s New Zealand distributor, Woodhill Distribution works with wineries, distilleries and online brands to replace plastic‑based protection in real‑world channels.

We can help you:

  • Map where damages or repacking are causing friction in your current process

  • Match the right Flexi‑Hex sleeves and ISTA 3A certified box formats to your channels

  • Run controlled trials in your courier network before you roll out more widely

Ready to See the Test Details?

If you’d like to review the ISTA 3A certification summary or trial Flexi‑Hex in your own network:

Email lisa@woodhilldistribution.co.nz, or use the contact form and mention “ISTA 3A trial” in your message.​

We’ll share the test overview and recommend a simple starter kit for your team to put through its paces.

Technical note: ISTA 3A scope: ISTA 3A is a general simulation performance test for individually packaged products shipped through parcel delivery systems, typically up to 68–70 kg (150 lb). It applies to four package types: standard, small, flat and elongated parcels.

A typical ISTA 3A sequence includes: atmospheric preconditioning and optional conditioning, free‑fall drops, random vibration with and without top load, compression, and optional random vibration under low pressure to simulate air transport. Together, these elements are designed to represent shocks, vibration and environmental changes that occur in real small‑parcel and courier networks.

For Flexi‑Hex bottle packs, ISTA 3A certification confirms that the tested sleeve‑plus‑box system has been evaluated against this protocol; it does not guarantee zero breakage in every real‑world scenario, but provides a recognised, lab‑based benchmark for package performance.

ISTA 3A refers to an International Safe Transit Association (ISTA) general simulation performance test protocol for individually packaged products shipped through parcel delivery systems. This packaging has been tested to the ISTA 3A protocol by the brand owner or manufacturer. Woodhill Distribution is not affiliated with ISTA and does not hold or grant rights to use ISTA certification marks.

Certified Protection That’s Also Plastic‑Free

Traditional “transit‑safe” solutions for bottles often rely on foam, bubble wrap, plastic fitments or mixed‑material gift boxes.

Flexi‑Hex takes a different approach:

  • Patented honeycomb sleeves made from recycled paper that expand around the bottle to absorb shock.

  • Purpose‑designed outer boxes (such as Pinch Top and Fold Top) that lock bottles in place and elevate the unboxing experience.

  • 100% plastic‑free, kerbside recyclable, biodegradable and home‑compostable materials.

You get courier‑level protection, without the plastic‑based padding your customers are increasingly pushing back on.

What Is ISTA 3A – And Why It Matters

ISTA 3A is an international test standard for individually packaged products shipped through parcel and courier systems, up to around 68–70 kg (150 lb).

In plain language, it simulates what actually happens to your orders in transit, including:

  • Repeated drops from defined heights (manual handling and conveyor bumps)

  • Random vibration during linehaul and last‑mile delivery

  • Compression and stacking loads on cartons

  • Temperature and humidity changes

Packaging that passes ISTA 3A has been shown, in a lab, to protect products through those hazards so your customers receive intact stock at the other end.