Babies grow fast. It’s something every parent is all-too-familiar with, and for more than just sentimental reasons. From cribs to strollers and beyond, there are a ton of things that babies need as they grow. As they transition through the newborn, toddler, and big-kid years, buying new items at every stage isn’t just environmentally unsustainable, it becomes expensive! Here are four baby products worth investing in that’ll carry you through the big-kid and even the teen years, cutting costs in the long run and helping you reduce the amount of items you collect as your little one grows. Darlington 4-in-1 Convertible Crib. Rather than buy separate cribs, toddler beds, and big-kid beds, opt for a multi-stage convertible crib. Namesake’s Darlington 4-in-1 Convertible Crib grows with baby from newborn all the way to the teen years. It has four adjustable mattress positions, letting you lower the mattress as your baby begins to sit, pull up, and stand. Toddler bed and full-size bed conversion kits are sold separately, so you can add them on as needed. Plus, its relaxed French country feel curates a style your little one won’t outgrow. Orbit Baby Stroll & Ride Travel System. Why get separate car seats and strollers when you can have both in one? The Orbit Baby Stroll & Ride Travel System seamlessly goes from the stroller to the car and back again. It includes a G5 Infant Car Seat for infants up to 30 lbs., and then converts to a stroller with 360° seat rotation and three different reclining positions. Plus, convert it to a double stroller with an additional attachment. Day-to-day and year-to-year, customize your system with different seating options and positions to ensure easy and comfortable travel with your babe. Crawford Pillowback Comfort Swivel Glider. From nursing to rocking to cuddling, you’re sure to spend a lot of time in your nursery chair. Rather than choose one you’ll get rid of after the toddler years, invest in a rocker or glider that’ll fit elsewhere in your home. The Crawford Pillowback Comfort Swivel Glider seamlessly transitions into a living room chair with its classic silhouette and elevated slipcover style, so you won’t need to part with it after the nursery years. Baby Bjorn Bouncer. Baby Bjorn’s bouncers last from age newborn to two, and they’re known for their modern ergonomic design and natural rocking motion. They’re machine-washable for added durability over the years, and you can choose from multiple bundles and add-on accessories so the product meets your little one’s growing needs. From fabric seat replacements to different toy attachments, it’ll keep baby happily bouncing into the toddler years. The Lalo Adjustable High Chair. This convertible high chair goes from high chair to booster seat to play chair, offering more value than a stand-alone high chair. It’s known for its sleek, splayed-leg design that blends in seamlessly with your modern kitchen or dining room. Build your own custom bundle with different straps, supports, and conversion kits, and adapt the versatile seating product as baby grows.