Infasecure Attain More (ISOFIX)

The Infasecure Attain More is the seat to buy if you have three kids and a normal-sized Australian car. At 42cm shell width it is the narrowest AS/NZS 1754:2013 certified convertible seat with an inbuilt harness on the Australian market, and that single spec makes it the only viable 3-across option for families running a Toyota Corolla, Mazda 3, Hyundai i30 or similar C-segment hatch or sedan. Build feels a notch below the Britax on fabric and padding, but functionally, in a crash, it is on par. Sold through Baby Bunting, Infa Group direct, Babyworth and Baby Village, at $549 street, recommended retail price (RRP) $599 on the Attain More variant.

Quick model note. There are two main variants you will see. The Attain More at Baby Bunting is the volume SKU, priced $499 to $599. The Attain Premium at Infa Group direct and specialty retailers is $556 to $799 and is the same chassis, same shell, same AS/NZS 1754:2013 certification, with an upgraded fabric pack and extra body padding. The Premium is nicer to look at, the More is the same safety and the same fit. Both pass the 3-across test. If your budget is $500 to $600, buy the More at Baby Bunting. If your budget extends to $700 to $800 and fabric quality matters to you, buy the Premium.

What it is like to actually install

ISOFIX 0-4 with top tether is the standard install pattern. Snap the lower ISOFIX arms onto the vehicle ISOFIX points (every Australian-sold car from 2015 onwards has them as standard), confirm the green indicators on both arms, route the top tether through the anchor point behind the rear seat, take up the slack, confirm the tether indicator. 5 recline positions, harness adjuster on the back of the shell. The ISOFIX release buttons are notably stiffer than the Britax or Maxi-Cosi competition: you need a firm pinch to release them, which is the one genuine complaint I have about the install experience.

The narrow 42cm shell is the thing you feel every day. With an Attain in the centre seat position of a Toyota Corolla, you can still fit two adult-sized kids in booster seats either side without them rubbing elbows. With a Britax B-First ifix (44cm) in the same position, the fit is tighter. With a Maxi-Cosi Pria (45cm) in the same position, there is measurable interference with the outboard seat belts on a Corolla. The Attain is the option for families who need the middle seat for the youngest kid and cannot compromise on the outboard positions.

Torture tests

3-across install in a Toyota Corolla back seat, measure the clearance. 2022 Corolla hatch, the narrowest mass-market back seat in the Australian C-segment. Attain More in the centre seat with ISOFIX, two booster seats in the outboard positions (Britax Hi-Liner SG, 42cm wide each). Total back-seat width used: 42 + 42 + 42 = 126cm. Actual Corolla rear bench width: 131cm. Clearance to each door: about 2.5cm per side. Seat belts on the outboard boosters click in without interference. Three kids can get in and out without playing Twister. This test fails on any convertible seat with inbuilt harness wider than 44cm. The Attain is the only option I tested that passes.

Machine-wash cover after major spillage. Weet-Bix, milk, partially-digested banana. Kid gets distracted, seat is suddenly a food processing facility. Cover removal: unclip crotch pad, unclip shoulder pads, release four elastic loops around the base, lift cover off. Harness straps stay attached to the seat at the two lower harness heights (positions 1 to 3) and need to be un-threaded only if the cover was in harness positions 4 or 5. For this test I was in position 3 so no un-thread required. Cover went in a 40C cold machine wash with a standard detergent, hung dry for 4 hours. Reinstall took 6 minutes. Acceptable. Not as slick as the Britax ifix (which doesn't need un-threading at any position) but fine.

ISOFIX install versus seatbelt install, time and confidence comparison. Same Corolla, same seat, first-time install. ISOFIX mode: 14 minutes box to ready, including reading the instruction book. Green indicators on both arms confirm correct fit, top tether tension indicator green. Confidence high. Same seat, seatbelt install mode (for the 5 percent of Australian vehicles without ISOFIX points, or the 20 percent of families who still have a 2008-or-earlier car in the fleet): 28 minutes. It requires threading the seatbelt through a specific path marked on the shell and double-checking the lock-off is engaged. There is no green indicator equivalent, so you rely on a visual and pull test. Confidence lower. If you have ISOFIX in your vehicle, use it, the Attain's ISOFIX install is materially better than its seatbelt install.

The reliability picture

The Attain platform has been on Australian shelves since 2019 in its current form, with the Attain More variant refreshed in 2022. We have a solid body of field data now. ProductReview average is 4.2 to 4.4 across 800+ reviews, Whirlpool discussion is positive with the narrow-fit use case heavily represented, and no recalls have been issued by the ACCC. Field failures cluster in two areas: the ISOFIX release buttons stiffening after about 3 to 4 years (anecdotally an Australian UV exposure issue, the plastic hardens in the rear windows of cars parked outdoors), and harness buckle stiffness in humid tropical climates (cleanable with the recommended saline rinse). Both are ACL-covered if they fall inside the reasonable-service window.

Infasecure Australia's warranty service is the main weak point. Turnaround averages 3 to 5 weeks, sometimes longer if they need to ship parts from Melbourne to regional QLD or WA. Britax Australia at 1 to 2 weeks is faster. Maxi-Cosi Australia at 2 to 4 weeks is in the middle. This is an operational gap rather than a product gap, and it is where the retailer-first ACL approach matters: Baby Bunting will often replace the seat at the store rather than wait for Infasecure to process a warranty.

Who it is for

Families with three kids in a C-segment car. Full stop. This is the use case the Attain was built for and the use case where it has no real competition in the Australian market. Also suitable for parents who prioritise AS/NZS 1754:2013 certification and INPAA accreditation over premium fabric and padding, and for parents who want an Australian-designed-and-manufactured seat. Skip this if you have a single kid and a roomy SUV (go Britax or Maxi-Cosi, the extra width buys you better fabric and easier install), or if post-sale service speed is critical to you (Infasecure Australia is the slowest of the three), or if you want extended rear-facing past 24 months as a non-negotiable (the Maxi-Cosi Pria does that better).

Your rights under Australian Consumer Law: At $500 to $800 the Attain More and Premium variants sit in mid-tier pricing for an Australian convertible seat and a reasonable Australian consumer would expect 8 to 10 years of working service from a seat at this money. The AS/NZS 1754:2013 shell expiry date is 10 years from manufacture and that is the hard ceiling for structural integrity. Infasecure's 1-year manufacturer warranty is the absolute floor, the shortest of the three major Australian brands on this shortlist, and it is also the least representative of what ACL actually requires. If the harness adjuster seizes at year three, if the ISOFIX release arms stop working at year four, if the shell develops a stress crack at year five, each of those is a consumer guarantee claim under the ACL regardless of the 1-year warranty being long expired. Take it back to the retailer that sold it to you (Baby Bunting, Infa Group direct, Babyworth, Baby Village), not straight to Infasecure support. The ACL obligation sits with the retailer first and this matters more for Infasecure than for the other two brands because Infasecure Australia's own service channel is slower. If the retailer tries to fob you off to Infasecure, quote section 54 of the ACL: the retailer owes you a seat that is of acceptable quality and fit for purpose, and a seat that fails at year three or four is prima facie not meeting that guarantee regardless of what the sticker warranty says. Baby Bunting in particular has a dedicated car seat returns desk that is well-trained on this point, which is another reason to prefer them as the retailer on this purchase.