Stock Up on Baby Essentials at Amazon's September Baby Sale

This four-in-one car seat with TrueShield Technology keeps your growing child comfortable with a six-position recline, 10-position adjustable headrest and Simply Safe Adjust Harness System (in which the harness and headrest adjust in one motion). Plus, it's suitable for babies starting at just four pounds.

BUY IT: Amazon, $263.99 (Originally $329.99 — 20% Off!)

This car seat organizer and backseat protector allows you to store any car accessories you have for your child, such as their favorite toys and books. The backseat protector also prevents them from damaging or spoiling the upholstery of your vehicle with spilled drinks, foods or muddy feet.

BUY IT: Amazon, $19.77 (Originally $39.99 — 51% Off!)

This bag is better than your classic backpack. It's everything you want in a backpack diaper bag but with stylish design, ergo straps and breathable mesh to keep you comfortable. Not to mention, it will leave you with two free hands and the freedom to take care of your little one.

BUY IT: Amazon, $100.76 (Originally $144.53 — 30% Off!)

Playards are hard to use, but the Breeze Plus is easy. It opens and closes in one step. Just push down on the central hub to open and pull up to close; the latches are automatic and there's no tricky sequence of steps. Designed to grow with your little one from newborn to toddler, it's an all-in-one care station that includes a removable bassinet, changing station and a convenient travel bag.

BUY IT: Amazon, $239.99 (Originally $299.99 — 20% Off!)

The Safari Dreams Music and Lights Gym is the coziest spot for your baby to embark on fun sensory play. The extra-soft and thick play mat is machine washable, and the plush and supportive tummy wedge has more than 20 minutes of music and calming vibrations to keep your tiny explorer comfy during tummy time.

BUY IT: Amazon, $63.71 (Originally $99.99 — 36% Off!)

This customizable infant swing is super cozy and lets you choose from a variety of soothing options to find the calming combination that works best for your baby and adjust to their ever-changing needs.

BUY IT: Amazon, $106.92 (Originally $159.99 — 33% Off!)

Create a fresher and cleaner sleeping surface for infants and toddlers with a waterproof mattress pad cover. The innovative stain-protection finish helps prevent stains on baby's mattress and allows them to easily wash away for a more sanitary environment.

BUY IT: Amazon, $15.76 (Originally $19.99 — 21% Off!)

This felt diaper caddy will make your everyday life much more comfortable and convenient. It's large and roomy with eight pockets, where you can fit all the essentials like diapers, wipes and creams. Plus, you can remove the organizer insert to adjust the space to fit your needs.

BUY IT: Amazon, $14.34 (Originally $49.99 — 71% Off!)

These fruit-shaped teether toys have a textured surface that will massage your little one's gums, helping with pain relief and rushing the teeth to sprout. Plus, they're safe for chewing, while also being easy to clean and disinfect.

BUY IT: Amazon, 10.70 (Originally $24.99 — 57% Off!) (Pack of 6)

These double-wall insulated kids' cups will keep drinks hot or cold for hours. We love that the included lids and silicone straws are BPA-free and super sturdy for little hands.

BUY IT: Amazon, $12.99 (Originally $17.99 — 28% Off!)

This brush and comb set is made from premium-grade goat bristles that are soft and non-invasive for your newborn's delicate scalp. They even help in even oil distribution to prevent cradle caps and promote healthy hair growth, reducing balding spots on your baby's head.

BUY IT: Amazon, $12.71 (Originally $16.96 — 25% Off!)