Whatever the weather, wherever you are going, the Diono rainier® 2AX is the car seat you can trust to protect your precious little one. The complete car seat system with extra-deep side walls, providing enhanced side impact protection. The full steel frame, extra-deep aluminum reinforced sides, and energy absorbing foam deliver best in class protection for your little one. And with extended rear-facing capabilities the rainier® 2AX accommodates children weighing 5 – 65 lbs.

With a unique low profile design, boarding your child becomes simple and easy. It could be the only car seat you’ll ever need. The Diono rainier® 2AX takes car seats to a whole other level. We’ve thought of everything so you don’t have to.

Product Specs:

Rear Facing

5-50 lbs / 2.3-22.7 kg

Forward Facing

20-65 lbs / 9.1-29.5 kg

Seated Torso Height

8.25-17″ / 21-43.2 cm

Overall Maximum Height

up to 57″ / 144.8 cm

Care and Maintenance:

Cover machine washable at 86F/30 C/Cold

Car Seat Installation:

Why Parents Chose Me:

All Aboard:

Easy boarding low profile – it’s the little things that make life simpler.

Diono All Aboard - ANB Baby

Travel The World:

Super portable, folds flat with available carry straps for easy travel and transporting.

Diono Travel The World - ANB Baby

Stylish and Snug:

Modern, versatile cover in soft, premium fabric for a comfortable ride everyday – it’s absorbent, easy to remove and machine washable too!

Diono Stylish and Snug - ANB Baby

Easy Installation:

Unique SuperLATCH™ system makes installation quick and easy. A versatile top tether for both rear and forward-facing unique car seats.

Diono Easy Installation - ANB Baby

Download Car Seat Instruction Manual

Tips and Tricks:

Airline Use

unfold the Diono car seat before boarding the plane and ask the flight attendant for seat belt extenders
make sure to install the car seat next to the window so passengers can get by in case of an emergency
make sure to take the slack out of the seat belt extender before connecting to the airplane seatbelt

Rear Facing Installation

first secure the detachable base and slide in the locking mechanism
adjust the harness to be the proper height for rear facing
adjust the head support to fit your child properly

Folding and Unfolding

to unfold: lay the car seat down on a stable flat surface and undo the velcro strap, tuck it in behind the fabric and open seat until clicked and locked.
to fold: remove the red velcro strap from behind the fabric and loosen up the harness as much as possible so they are at the top of the car seat. release the lever at the bottom of the car seat and push seat inward - secure the top with the red velcro strap.

Right for Newborn

whether you buy an infant only car seat or an all-in-one convertible car seat, both car seats have to meet the same standard
seats like the Diono all-in-one convertible car seats come with an infant cushion insert to properly fit your child in the harness
all-in-one convertibles are more economical - they have a lot of room for growth for your growing child

FAQ's:

can I install the rainier® 3-across in my car?

generally, the car seat will not fit 3-across if all the car seats are all the same width. Because the Rainier 2AX is 18.5″ (47cm), we recommend using the Diono Radian series of car seats as they have a slimmer profile at 17″ (43.2cm) wide.

can the harness straps be cleaned?

yes, we recommend using a damp cloth with a solution of water and baking soda to wipe the straps clean. They cannot be saturated in any liquid, or they will need to be replaced. Replacement harness straps can be purchased on our website

can I use the rainier® 2AX from birth?

yes, the weight limits on all our convertible car seats starts at 5lbs/2.3kg. The newborn must also meet a length requirement where the top of their shoulders reaches the lowest harness slot on the seat.

are the harness pads and buckle pads required on my seat?

yes, required while forward-facing. They are optional but recommended while rear-facing. The center buckle pad is required at all times.

are the harness pads and buckle pads required on my seat?

yes, required while forward-facing. They are optional but recommended while rear-facing. The center buckle pad is required at all times.

can the memory foam be washed?

yes, it can be hand washed in cold water and air dried.

what is the difference between the rainier® 2AX and rainier® 2AXT?

the rainier® 2AXT comes with adjustable head wings and can convert to booster mode, whereas the rainier® 2AX does not.