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 Graco SlimFitGraco SlimFit3 LXGraco TrioGrow SnugLockGraco True3Fit LX
BASICS 
Carseat NameSlimFitSlimFit3 LXTrioGrow SnugLockTrue3Fit LX
CarseatBlog Recommended Seat
IIHS Best Bet Booster
Available atBuy at Amazon.comBuy at Graco.comBuy at Walmart.comBuy at Walmart.com
Available in Canada
RF Weight Limits4-40 lbs.5-40 lbs.5-40 lbs.5-40 lbs.
RF Height Limits1″ below red adjuster handle1″ below adjuster handle1″ below adjuster handle1″ below adjuster handle
FF Weight Limits20-65 lbs.22-65 lbs.22-65 lbs.22-65 lbs.
BPB Weight LimitsHighback: 30-100 lbs., 38-57 in. 40-100 lbs.40-100 lbs.40-100 lbs.
Age LimitsBPB: 4+ years oldBPB: at least 4 years oldBPB: at least 4 years oldBPB: at least 4 years old
Type of Energy-Absorbing FoamEPS foamEPS foamEPS foamEPS foam
HARNESS INFO 
Carseat NameSlimFitSlimFit3 LXTrioGrow SnugLockTrue3Fit LX
No Re-thread Harness?
Number of harness height positions10101010
Bottom/Lowest Harness Slot7 in.7 in.6.25 in.7 in.
2nd Harness Slot or Highest Harness Slot18 in.17.75 in.17.5 in.17.75 in.
3rd Harness Slot
4th Harness Slot
5th Harness Slot
Highest BPB Shoulder Belt Guide18.75 in.19.5 in.18.5 in.19.5 in.
Booster ModesHighbackHighbackHighbackHighback
Closest Buckle Slot3 in.3 in. with padding2 in. with padding3 in. with padding
2nd Buckle Slot4 in.5 in.5.5 in.5 in.
3rd Buckle Slot5 in.6 in.6 in.
Special Buckle Routing for Small Babies
SEAT INFO 
Carseat NameSlimFitSlimFit3 LXTrioGrow SnugLockTrue3Fit LX
Inside Shoulder Width13 in.14 in.14 in.14 in.
Inside Hip Width13 in.11 in.12 in.11 in.
Inside Knee Width12 in.12 in.12 in.
Inside Seat Depth13 in.12 in.12 in.12 in.
Inside Seat Height28.5 in.30.25 in.30 in.30.25 in.
External Widest Point18.5 in.16.5 in.19 in.16.5 in.
Seat Weight19.5 lbs.18.8 lbs. with padding, 18.3 lbs. without padding18 lbs. with padding, 17.7 lbs. without padding18.8 lbs. with padding, 18.3 lbs. without padding
INSTALL INFO 
Carseat NameSlimFitSlimFit3 LXTrioGrow SnugLock LXTrue3Fit LX
Recline Indicator StyleBallBallBallBall
Recline Indicator LocationOn side of seatOn both sides of seatOn side of seatOn both sides of seat
Number of RF Recline Positions2232
Number of FF Recline Positions2232
Has Anti-Rebound Bar or RF Tether?
RF Lockoff
FF Lockoff
Type of LATCH ConnectorsPush-onPush-onHook-onPush-on
RF LATCH connectors/belt path are separate from RF seat belt/belt path
FF LATCH connectors/belt path are separate from FF seat belt/belt path
LATCH Weight Limit45 lbs.45 lbs. 45 lbs.45 lbs.
Non-standard LATCH Policy (can “borrow” LATCH anchors)Not allowedNot allowedNot allowedNot allowed
Inflatable Seat Belt PolicyNot allowed in harness mode; allowed in booster mode.Allowed. Route inflatable seat belt over lockoff and lock with retractor instead.Allowed. Route inflatable seat belt over SnugLock lockoff and lock with retractor instead.Allowed. Route inflatable seat belt over lockoff and lock with retractor instead.
MISC. 
Carseat NameSlimFitSlimFit3 LXTrioGrow SnugLockTrue3Fit LX
Cover Removal/InstallationEasyEasy removal; snaps can be difficult on installationEasyEasy removal; snaps can be difficult on installation
Cover Washing InstructionsMachine wash and air dryMachine wash and air dryMachine wash and air dryMachine wash and air dry
Expiration10 years10 years10 years10 years
Crash GuidelinesReplace after any crashReplace after any crashReplace after any crashReplace after any crash
FAA Certified?
CommentsThe SlimFit is based on the Milestone All-in-1 carseat. It differs in the design of the cup holders, which allow it to be about an inch narrower.
O Canada
Manufacturing CountryChinaChinaChinaChina
CarseatBlog.com ReviewMilestone ReviewSlimFit3 LX ReviewTrioGrow SnugLock LX ReviewSlimFit3 LX/True3Fit LX Review
Available AtBuy at Amazon.comBuy at Graco.comBuy at Walmart.comBuy at Walmart.com
Price or MSRP$229.00$249$179$229