Doubles when you need it
Expandable Backpack Slate Blue
Sleek enough for work, big enough for a weekend. An external expandable pocket takes it from 15 to 30 litres, and a trolley sleeve slides it over any MiaMily handle.
Fast dispatch from our Melbourne warehouse, Australia-wide. NZ shipping on Carry On and Backpacks.
Zips, handles, wheels, stitching
Expands when you need it
Features
- 15 litres, or 30 litres expanded
- External expandable pocket that doubles capacity
- 100% recycled polyester, water-resistant
- YKK zips
- Trolley sleeve, slides over any MiaMily handle
- Laptop pocket and thermal water bottle pocket
- Anti-theft passport pocket
- Sunglasses pocket, umbrella pocket, magazine pocket
- Padded adjustable shoulder straps
- Limited lifetime warranty
Specifications
| Colour | Slate Blue |
| Design | Expandable Backpack |
| Dimensions | 44 × 31 × 11 cm, 22 cm expanded |
| Capacity | 30 litres |
| Weight | See product |
| Opening | Expandable main pocket, 11 organisational pockets |
| Lock | YKK zips, anti-theft passport pocket |
| Seat | None |
| Child seatbelt | Not on this model |
| Wheel brake | No |
| Materials | 100% recycled polyester · YKK zippers |
| Warranty | Limited lifetime, via Coolkidz Australia |
| SKU | MIA-BPSB |
Delivery & returns
Australia-wide delivery with fast dispatch from our Melbourne warehouse. Returns under the store's refund policy. Warranty claims through the Coolkidz support portal.
$199 inc GST
Features, in pictures
What you are looking at.
Expandable front15 litres, 30 when it counts
Padded strapsTrolley sleeve on the back
Eleven pocketsLaptop, bottle, passport, sunglasses
Recycled polyesterWater-resistant, YKK zips
Doubles when you need it
Fifteen litres. Thirty when it counts.
All the way round
Eleven pockets. One clean shape.
Laptop sleeve, thermal bottle pocket, anti-theft passport pocket, sunglasses pocket, umbrella sleeve, and an expandable front that doubles the volume. Slides over any MiaMily handle.
About the backpack
Is the ride-on seat safe for children?
Yes, within its limits. The luggage has an aluminium frame rated to 100 kg and a wider base for stability, and the Carry On, Check In, Carry On Plus and Check In Plus include a built-in safety belt to secure your child. Children must be able to sit unassisted and should always be supervised by an adult. Use it on flat surfaces only, never on escalators or stairs.
What age can a child ride on MiaMily luggage?
MiaMily does not set a minimum age; the rule is that the child must be able to sit unassisted, be belted in, and be supervised. Most families use the ride-on from the toddler years. The 100 kg capacity means older kids and adults can sit on it too.
Does the Carry On Pro have a ride-on seat?
The Carry On Pro has a reinforced Sit Ready shell that supports up to 100 kg, so you can sit on it at the gate. It does not include the child seatbelt or the seat-back bag hook of the Carry On, Check In and Plus models, so it suits older kids, teens and adults rather than toddlers.
Can I use the seat as a high chair?
The Carry On Plus is designed so the built-in seat doubles as a high chair on the go, with the wheel brake keeping the case still while your child is seated. Always belt your child in and stay with them.
What happens to the seat when I travel without a child?
It becomes a bag holder. Hook or stack a nappy bag, tote or briefcase on the seat, or sit on it yourself during long waits.
What are the dimensions and weight of the Carry On?
Carry On: 51 × 38 × 29 cm including wheels (20 × 14.9 × 11.4 inches), 4.3 kg, 43 litres. It is the same footprint MiaMily describes as fitting most airline overhead compartments.
