You have chosen your Peli case, and now the configurator asks a second question: foam, padded dividers or TrekPak? It looks like a minor option, yet it decides how the case feels on every single trip. Pick the wrong interior and an otherwise perfect case becomes the one you repack with irritation or leave at home.
None of the three systems is "best". Each one wins in specific situations and loses in others. This guide, updated for the 2026/27 season, explains the three interiors in plain language, shows which Peli models offer which options (using the specifications on our product pages), and gives a straight recommendation for 8 real-world scenarios.
What Changed for the 2026/27 Season
Three practical points are worth knowing before you choose this season.
- Winter and shoulder-season trips are back on the calendar. Ski weekends, Christmas markets and city breaks mean more cabin luggage and more gear that has to survive cold, rain and rough handling. A sealed case with the right interior is an easy upgrade for all of them.
- Cabin limits are still the main constraint. The Peli 1535 TRVL measures 55.8 × 35.5 × 22.8 cm. Its 22.8 cm depth can exceed the 20 cm limit used by some low-cost carriers, so check your airline's current rules before booking. The interior you choose changes how much you can fit in that fixed space.
- Interiors are no longer a one-time decision. Padded divider sets and lid organizers exist for the most popular models, so a case bought with foam today can be reorganised later. We cover the upgrade options near the end of this guide.
The Three Systems, Explained in 60 Seconds
Pick N Pluck foam
Layers of pre-scored foam: you pull out cubes to create cavities shaped to your gear. Strengths: the tightest, most protective fit; every item has one home; nothing moves. Weaknesses: the layout is permanent because removed cubes do not go back, foam takes up interior volume, and it compresses over years of use. Foam is a commitment, and a good one if your kit does not change.
Padded dividers
A soft padded floor with hook-and-loop walls that you reposition freely, the same idea as a camera backpack. Strengths: reconfigure in seconds without tools, efficient for many mid-size items, gentle on delicate finishes. Weaknesses: less immobilising than foam, so items can shift slightly in severe handling, and tall heavy objects can topple sections. The flexible all-rounder.
TrekPak
A pin-based, no-cut divider system with rigid panels that you place exactly where you want them and a removable padded floor. Strengths: near-foam holding power with divider-style reconfigurability, clean vertical walls that keep heavy items upright, and a layout you can rebuild in minutes without altering anything permanently. Weaknesses: the first setup takes time, reconfiguring is slower than hook-and-loop, and it is the most expensive of the three. The precision option.
Which Peli Models Offer Which Interior
Before comparing interiors, check that your model actually offers the one you want. Not every case comes with all three systems. The table below is based on the current product pages.
| Model | Interior options | Key facts from the product page | Best for |
|---|---|---|---|
| Peli Air 1535 Carry-On | No foam, foam, padded dividers, TrekPak | Carry-on size for most major airlines, IP67, MIL-SPEC, up to 40% lighter than comparable cases | Cabin travel with fragile gear |
| Peli Air 1535 TRVL | Travel case, optional padded divider kit | 55.8 × 35.5 × 22.8 cm, 4.7 kg, two TSA-approved combination locks | Business and frequent flyers |
| Peli Air 1555 | No foam, foam, padded dividers, TrekPak | Medium case, carry-on compatible on most airlines (verify with your carrier), IP67 | Camera body with lenses, compact drones |
| Peli Air 1557 | No foam, foam, TrekPak, padded divider organiser | Mid-size hard case, IP67, MIL-SPEC, two padlock protectors | Drones, mirrorless rigs, instruments |
| Peli Air 1605 | No foam, foam, padded dividers | 73.3 × 42.6 × 23.2 cm, 4.2 kg empty and 5.3 kg with foam, checked baggage size | Cinema drones, large kits |
| Peli Air 1637 | No foam, foam, padded dividers | Deep wheeled case, retractable trolley handle, black or orange | Heavy kits that travel by wheels |
If TrekPak is your priority, the 1535, the 1555 and the 1557 are the models that list it.
8 Scenarios: Which Interior Wins?
1. One camera body, three lenses, a kit that never changes
Foam. A stable kit is exactly what Pick N Pluck was made for. Cut once, enjoy for years: every lens drops into its own cavity, the lid foam presses everything gently in place, and one glance shows what is missing. If your kit list has not changed in a year, stop overthinking and choose foam. The Peli Air 1555 or 1535 are natural homes for this kit.
2. A working photographer whose loadout changes weekly
Padded dividers. A wedding on Saturday, a product shoot on Tuesday, a drone job on Thursday: if you repack for every job, foam becomes a prison. Hook-and-loop dividers reshape in the car park in half a minute. You accept a slightly softer hold and gain flexibility every single week.
3. A drone with batteries, controller and accessories
TrekPak, with foam as a close second. A drone setup is an awkward mix of one large odd-shaped item and several small heavy ones. TrekPak's rigid walls hold batteries upright and immobilise the airframe without wasting space. If your setup is truly permanent, custom-cut foam edges ahead; if you swap payloads and batteries around, TrekPak wins. Our guide to drone hard cases goes deeper on sizing.
4. A single fragile instrument: optics, medical or measurement
Foam, no contest. When one irreplaceable item must survive anything, you want the maximum contact area and zero movement. A shaped foam cavity is the gold standard, which is why instrument makers ship in exactly this configuration. For truly critical equipment, consider professionally cut custom foam rather than pick-and-pluck.
5. Tools and field-service kit
Foam for the shadow-board effect, or dividers for the everything-drawer. Foam with tool-shaped cutouts shows instantly when a tool is missing, which is why it is popular in aviation and industry. If your tool loadout varies by job, padded dividers plus a lid organizer for small parts is the more practical setup.
6. Mixed daily kit: laptop, cables, chargers and a camera
Padded dividers plus a lid organizer. This is the classic mobile-office build: dividers section off the bottom for bulky items, while a lid organizer absorbs the flat clutter. The 14–16 inch laptop lid organizer holds a laptop up to 40 × 25 × 3 cm in a padded sleeve and adds up to 30% more usable storage without changing the case's outer dimensions.
7. Equipment that ships: couriers, freight, one-way transport
Foam. When the case travels without you, assume the worst handling and remove every variable: no hook-and-loop that can work loose, no walls that can shift. Gear encased in foam is how sensitive equipment has been freighted for decades. Pair it with a case that is rated for the journey, and read our comparison of a flight case and a Peli case if you are choosing between formats.
8. Maximum gear in minimum case
TrekPak. Thin rigid walls use space efficiently, so you can often fit a bit more gear into the same shell than a thick foam layout allows. If airline size limits mean every centimetre counts, TrekPak can let you drop one case size or bring one more lens. Our guide to packing camera gear for three weeks in one carry-on shows how photographers apply this in practice.
Cases Available With Foam, Dividers or TrekPak
Most popular Peli models sell in ready configurations, so pick the right variant up front and skip a second purchase. These four offer the widest choice of interiors.
Peli Air 1555 Case
Four interiors: no foam, Pick N Pluck foam, padded dividers or TrekPak. A medium case built on HPX² polymer, IP67 and MIL-SPEC, with Press and Pull latches and stainless steel padlock protectors. See the Peli Air 1555 Case.
Peli Air 1557 Case
Four interiors: no foam, Pick N Pluck foam, TrekPak or a padded divider organiser. A mid-size case with an automatic pressure equalization valve and a waterproof O-ring seal. See the Peli Air 1557 Case.
Peli Air 1605 Case
Three interiors: no foam, foam or padded dividers. External dimensions 73.3 × 42.6 × 23.2 cm and 4.2 kg empty (5.3 kg with foam), so it travels as checked baggage, in a vehicle or as freight. See the Peli Air 1605 Case.
Peli Air 1637 Case
Three interiors: no foam, foam or padded dividers. A deep wheeled case with a retractable trolley handle, available in black or orange. See the Peli Air 1637 Case.
For cabin travel, the Peli Air 1535 Carry-On Case offers all four interiors, including TrekPak.
The 30-Second Decision
- Kit never changes? Foam.
- Kit changes weekly? Padded dividers.
- Heavy items and maximum space efficiency? TrekPak.
- One irreplaceable item, or shipping without you? Foam.
- Mobile office? Dividers plus a lid organizer.
- Truly cannot decide? Padded dividers: the safest first choice and the easiest to change your mind from.
Upgrade What You Already Own
Already have a case with the "wrong" interior? Nothing is wasted. Divider sets and lid organizers retrofit into popular models in minutes, and the lid is the most under-used space in every hard case. A mesh or laptop organizer up top plus your existing bottom system is often the biggest quality-of-life upgrade a case can get.
Peli 1510 Padded Divider Set, Green
Waterproof 230T nylon over 15 mm EPE foam. The set includes 2 long, 8 medium and 3 short dividers plus 4 elastic straps, and also fits the iM2500 and Apache 5800 interiors. The case itself is not included. See the Peli 1510 Padded Divider Set, Green.
Peli 1510 Padded Divider Set, Desert Tan
The same divider system in a desert tan colourway. See the Peli 1510 Padded Divider Set, Desert Tan.
Lid Mesh Organizer for 1535 and 1510
Five zippered mesh pockets in ballistic nylon for cables, batteries and cards, fitted to the Peli 1510, Peli Air 1535 and Peli Storm iM2500. Mounting screws are included. See the Lid Mesh Organizer.
Laptop 14–16" Lid Organizer
A padded, waterproof laptop sleeve plus a removable zippered pouch, installed without drilling in under ten minutes. See the Laptop 14–16" Lid Organizer.
Frequently Asked Questions
Can I change the interior later?
Yes. Cases usually outlive kits, and a foam case today can become a divider case in a few years. Divider sets and lid organizers are sold separately for popular models such as the Peli 1510 and Peli Air 1535. Foam is the exception: removed cubes cannot be put back, so choose foam only when you are sure of the layout.
Does the interior affect weight?
Yes, slightly. For example, the Peli Air 1605 weighs 4.2 kg empty and 5.3 kg with foam, so the foam adds about 1.1 kg. On a cabin case with a strict weight allowance, a lighter divider system can leave more room for your gear.
Which interior is best for flying?
For checked baggage, foam gives the most protection against rough handling. For the cabin, a Peli Air 1535 with padded dividers or TrekPak keeps your kit flexible. Either way, the automatic pressure equalization valve helps the lid open normally after a flight; if it ever feels stuck, read why a Peli case won't open and what the pressure valve is doing.
Which is the best choice for a first case?
Padded dividers. They let you learn how you actually pack before you commit, and you can move to foam or TrekPak later. If you are still comparing materials, our article on aluminium cases versus Peli cases explains the differences, and the guide to wheels, handles and latches covers the parts that wear out first.
Not sure which interior fits your exact kit? Send us your gear list. Sizing cases and interiors around real equipment is what we do every day.
