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Description
britax boulevard harness replacement Britax Poplar S Convertible Car SeatThe Britax Poplar Convertible Car Seat can safely accommodate children up to 50 pounds while rear facing and easily transitions to a forward facing car seat as your child grows. Slim outside and spacious inside, the toddler car seat features 17" SpaceSaver technology designed to fit 3 across* without compromising on trusted Britax safety and premium comfort. *Britax cannot guarantee 3 across installation fitment in all vehicles. Specifications
The Britax Poplar Convertible Car Seat can safely accommodate children up to 50 pounds while rear-facing and easily transitions to a forward-facing car seat as your child grows. Slim outside and spacious inside, the toddler car seat features 17" SpaceSaver technology designed to fit 3-across* without compromising on trusted Britax safety and premium comfort.
*Britax cannot guarantee 3-across installation fitment in all vehicles.
Specifications
- Convertible design car seat works as a rear-facing car seat with the infant insert, and converts to a forward-facing car seat.
- 2 additional premium inserts and padding that help create refined comfort and a tailored fit.
- ReboundReduce™ Stability Bar is a carbon steel bar that easily attaches to the car seat when installed rear-facing. It minimizes the movement in the event of a crash; it must be removed when installed forward-facing
- With ClickTight, you know it’s right in just 3 easy steps: open, buckle, and close.
- Infant inserts are specifically designed to fit newborns 22 lbs. and under.
- 5-point safety harness helps evenly distribute crash energy to keep your child safe.
- Fully open seat belt paths are clearly labeled and easy to access, while the automatic tensioner takes care of the tightening.
- Patented v-shape top tether has two connection points to help slow and reduce forward movement in a crash; easily stores away when not in use.
- The fabric is naturally flame retardant with no added FR chemicals
- Safecell Technology acts as a crumple zone, helping to keep crash energy away from your child.
- The 14-position harness and headrest move with one hand to grow with your child.
- Washer and Dryer Friendly, no more hand washing or waiting for the cover to air-dry; just quick and easy cleanup, so you can keep moving.
- The 2 cup holders slide in and out and are dishwasher-safe for easy cleaning between rides.
- Easy-read level indicators with 6-position and quick-adjust recline help you find the most comfortable fit for your child and the best fit for your vehicle.
- 1-Year Limited Warranty.
Dimensions & Weight
- 17" W x 23.5" H x 20.5" D
- Child Weight Rear-Facing: 5 - 50 lbs.
- Child Weight Forward-Facing: 22-65 lbs.
- Child Height: up to 49"
- Seat Area Depth/Width: 11" / 12"
Britax strongly recommends that children ride rear-facing to the highest weight or height specified.
What's Included
- Convertible Car Seat
- 2 Removable Premium Inserts
- 2 Dishwasher Safe Cup Holders.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 727 reviews
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Product Reviews
★★★★★ 5
Good quality, smooth feel
I got these briefs so recently that have washed just one pair so far. First off, these are very comfortable, the material is soft & bordering silky, good quality sewing. Wash well and minimal if any shrinkage. They do come a bit wrinkled from the dryer but hey, these are underwear and will go on smoothly. If it were a t-shirt, I would look sloppy. I feel the sizing is accurate. No rolling and these don't announce themselves under clothing. Planning on getting more of these boxers and replacing my old panties.
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Reviewed in the United States on January 31, 2026
★★★★★ 4
A little snug on the thighs
Size: Medium, Color: Multicoloured G (5-pack)
Super comfy, soft and thin. For reference, I'm 5'6", 135, athletic build. I bought medium. I almost returned them because I thought they were a bit too snug on my thighs, and my thighs are not large at all. I was concerned about panty lines under snug clothing. But, because they're thin, I figured they would probably stretch, so I kept them. So far, I've only worn them under a night shirt, but they're super comfortable and they dont ride up at all. Very nice, but if your thighs are a little thick, you probably won't like them.
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Reviewed in the United States on August 29, 2025
★★★★★ 5
Functional + Sexy
Size: Small, Color: Multicoloured E-(5-pack), Size: Small, Color: Multicoloured E-(5-pack)
Not only do these feel good, my husband can’t keep his hands off me. They fit so good and are soft. I change into these to sleep but also just use them as shorts to wear around the house. They’re comfortable and don’t slide around. I got a size small and I’m 100lbs.
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Reviewed in the United States on April 13, 2026
★★★★★ 5
Finally!
Size: X-Large, Color: All Black D (5-pack)
Finally, comfortable underwear that don’t end up giving me a wedgie. I have a round booty and most cuts of underwear end up shifting as I walk and sit. The hem of the underwear comes right under my cheeks and the lightweight material ensures there’s no panty line and no shifting to where I don’t want them! I’m definitely purchasing more.
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Reviewed in the United States on May 17, 2026
★★★★★ 3
Ehh
Size: Medium, Color: Multicoloured E-(5-pack)
Very thin, still comfy but very thin material. Super soft though. I've worn and washed and they have held up but I won't be repurchasing bc these are so thin
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Reviewed in the United States on April 14, 2026