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Baby Trend

Hybrid™ SI 3-in-1 Booster Seat

Converts to Harness, High-Back, or Backless Booster Car Seat. Padded Sides.

FB49E05B

$99.99 $109.99
  • Can be used as a harness booster, high-back booster and backless booster.
  • Superior side impact protection with cushioned padding and side impact pods for enhanced safety (In Harness Mode Only, meets or exceeds FMVSS 213a Side Impact Requirements).
  • Comfortable and reversible soft inserts.
  • 5-point adjustable safety harness with padded shoulders and crotch covers.
  • 4 harness height positions with comfortable arm rests.
  • Two cup holders for different sized cups.
Color: Hoboken Teal
Crash tested to the federal FMVSS 213 standardSee how

Certifications & Awards

Baby Trend is a member of the Baby Safety Alliance

Technical Details
  • Product dimensions: 18.00" x 21.00" x 29.25"
  • Minimum weight recommendation: 30 lb
  • Maximum weight recommendation: 100 lb
  • Maximum height recommendation: 57"
  • Toddler car seat (with built-in harness system): 30–50 lb, 2 years of age
  • High–back booster car seat (without harness system): 40-100 lb, 4 years of age
  • Backless booster car seat (without harness system and back support): 40–100 lb, 4 years of age
  • Materials: Head support insert, back support pad, head support pad
  • – 100% polyurethane foam
  • – View law label
  • Materials: Body insert
  • – 83% polyurethane foam, 17% polyester fiber
  • – View law label
  • Number of items: 1
  • Batteries required: No
  • Item weight: 16 lb

Product Instruction Manual

Download Product Instruction Manual - English

Download Product Instruction Manual - Spanish

Recommended Use
  • Stage 1: Weight 30–50 lb, height 29”–48”, 2 years of age
  • Stage 2: Weight 40–100 lb, height 38”–50”, 4 years of age
  • Stage 3: Weight 40–100 lb, height 42”–57”, 4 years of age

Description

The Baby Trend® Hybrid™ SI 3-in-1 Combination Booster Seat with Side Impact Protection provides optimal safety and comfort for your growing child. This forward facing sporty designed booster seat offers your family value as it can be used for an extended period of time with a 5-point harness as well as high-back booster and backless booster modes.

The height adjustable headrest provides superior side impact protection and comfort. The side impact pods attached to the side of the car seat frame provides added safety and protection for your little one in the case of a collision. The reversible and soft inserts and two cup holders provide comfort, versatility and convenience for the growing child.

Hybrid™ SI 3-in-1 Booster Seat - Video 1
Hybrid™ SI 3-in-1 Booster Seat - Video 2
Hybrid™ SI 3-in-1 Booster Seat - Video 3

Safety and fit at a glance

Every Baby Trend car seat is crash tested to the federal FMVSS 213 standard before it ships.

Recommended use

  • Stage 1: Weight 30–50 lb, height 29”–48”, 2 years of age
  • Stage 2: Weight 40–100 lb, height 38”–50”, 4 years of age
  • Stage 3: Weight 40–100 lb, height 42”–57”, 4 years of age

  • FMVSS 213 / 213a

  • ASTM & CPSC Standards

Learn how we test

Frequently Asked Questions

Is Baby Trend FAA approved?

Many Baby Trend infant car seats are FAA approved for airplane use. Check for the FAA certification label on your specific car seat model. Install rear-facing using the airplane's lap belt only (base stays at home). Always verify your model's approval status before flying.

How long are Baby Trend car seats good for?

Baby Trend car seats have a 6-year lifespan from the manufacture date. This expiration date is clearly labeled on the seat. Materials deteriorate and safety standards advance over time, making expired seats unsafe regardless of appearance. Never use an expired car seat.

What is the difference between a hybrid and a convertible car seat?

Convertible car seats transition from rear-facing to forward-facing (2 modes). Hybrid or 3-in-1 seats add a booster mode, extending use from infancy through elementary school. All-in-one seats may include 4 modes. More modes mean longer usability but typically bulkier designs.

Can a Baby Trend infant car seat be used without a base?

Yes, Baby Trend infant car seats can be installed without the base using the vehicle's seat belt routed through the designated belt path. This is particularly useful for travel, taxis, and secondary vehicles. Follow your manual's baseless installation instructions carefully.

Do you legally have to have a car seat base?

No, car seat bases are not legally required. You can legally install car seats using only the vehicle's seat belt as long as installation follows the manufacturer's instructions correctly. Bases provide convenience but aren't mandatory for safe or legal use.

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