- Color: Black
- Material: Plastic, Acrylonitrile Butadiene Styrene
- Brand: SMART KUP
- Product Dimensions: 4″L x 4″W x 6″H
- COMPATIBILITY – This cup holder expander for car is designed to be compatible with holding the 32/40 oz Hydroflask, 40 oz 50/50 Flask. It is super handy and can work with the most popular brands of bottles & mugs up to 3.8 inches in diameter. It’s a perfect cup holder adapter for you.
- FITS SNUGLY – Looking for a cup holder that fits even in shallow cup holders? Look no further. Our drink holder for car has a tapered narrow base that goes from 3.2″ to 2.6″ to provide a snugger fit and fix your shallow cup holder issues. No more rolling around!
- STAYS IN PLACE – Built to stay in place while making turns and hitting brakes. Hydroflask cup holder for car is engineered with a 3-inch upper cup that firmly holds your flask. Other holders have a 2-inch upper cup which makes your bottle prone to falling out on turns.
- DURABLE – The cup holder expander is constructed with ABS plastic with a glossy finish that makes it resistant to any impact and abrasion. It provides superior sturdiness that fits into your existing cup holder to ensure bottles and cups of different sizes stay secure in transit.
- U-SHAPE CUT-OUT – The car cup expander includes a slot on the side to accommodate coffee cups or travel mugs with external handles and allow their secure placement. Start your journey with your favorite beverages/bottles while on the road with the smart kup car cup holder.























Emily Troutman –
The hard-to-remove stickers are an annoyance and an eyesore but they do not prevent me from using the product. It doesn’t fit totally snuggly in my 2004 Buick LeSabre’s cup holder and sometimes rattles because of it, but it serves the function of holding my Nalgene and keeping it from rolling all over the passenger seat.
M. C. –
This product allows me a place for my 40oz. Water jug. Yea!!
Barbara J Senneff –
Not adaptable to most cups. Doesn’t fit my or my friends cups.
Cassie Hoene –
I always have my water tumbler on me but was SOOO frustrated about having to lay it in the passengers seat in my car because my cup holders were too small.This product saved the day!
Glennette lawrence –
No complaints. It saved a lot of hassle from using a knife.
Ninatropea –
My daughter loves this cup holder for her car. She was so pleased with it, her HydroFlex 32 ounce fits perfectly and she is very happy. Sorry I have no picture and her happiness is better than any picture.
Shortie girl –
I have 4 of these. They worked phenomenal in the 2 cars I originally bought them for but since then, I’ve had to rig them up to work with a mix of shelf liner and rubber bands to hold the shelf liner. It’s not the best, but since I already own them and they still function, I’ll retro fit them, but I won’t buy more unless the new ones I ordered are just as wobbly and cost more.They worked in my 2017 Ford Escape but need to be retro fit to work in my 2022 Escape or 2022 Ford Maverick.They just wobble around unless I add sticky bulk to the bottom of the holder.They wobble in front and back holders
F.G. –
Had to knock off 1 star on “Sturdiness” b/c it wobbled around a bit in my cup holder. I got the idea though to put a Koozie at the base and BOOM! Best cup holder EVER! Try this hack and it works like a charm.