Volcom Big Boys Shark-Print Swim Trunks

Step into spring by outfitting your tiny tot in one of these stylish, comfortable and durable spring jackets. From waterproof toddler jackets to trendy denim jackets for kids, here are some of our favorite spring jackets for toddlers from retailers you love like Carter's, Nordstrom, Gap and Old Navy.

Spending time in the water with your little one is a great way to celebrate warm weather—but hitting the pools, beaches and splash pads with babies and toddlers who are still in diapers can feel like a hassle. Preparing ahead of time with the most durable and comfortable swim diapers can make your day at the beach a breeze. We've rounded up the best disposable and reusable swim diapers with leak-proof construction you can count on and adorable styles and patterns that are sure to make a splash.

When your babe begins to sit up, it's time to start searching for the best floor seat to support your baby boy or girl. Mom and dad can take advantage of a few hands-free moments as their tiny tyke takes a seat in these cool activity chairs. We've rounded up several top-rated styles which provide a place to play and plenty of legroom for your little one to stay seated comfortably. If your infant is ready for a break from the playard, these fab floor seats are the perfect place for your baby to sit tight.

What parent isn't totally on board with finding the perfect train set to support their baby and big kid in building a love of locomotives, steam engines and freight cars? If your cute little conductor is driven by spending hours constructing and running rail cars while stimulating their imagination and improving cognitive skills, then we have the inside track on the best trains to entertain budding engineers of all ages. From stacking trains for toddlers to battery operated, electric and magnetic engines for more mature railroad enthusiasts (with many compatible tracks that can be expanded as your little one grows), there's something fun for every young train fan.

If you're on the hunt for the perfect ugly Christmas sweater for kids, have we got a gift for you! From dinosaurs to reindeers to the beloved Grinch, we've rounded up the weirdest, funniest holiday sweaters for babies, toddlers and big kids. Shop some of our favorite ugly finds for your little cutie below.

This year marks the Chinese Lunar New Year of the Pig, which symbolizes luck and good fortune. Babies born under this serendipitous sign are characterized as having energetic and enthusiastic personalities, which is why we are super excited about our roundup of prosperous and precious pig-themed presents. From plush piglets, clothing, books and slippers we think these gift ideas will have your little ones going hog wild all year round.

How do you know if your tween or child is ready for her first bra? It depends — companies make training bras for girls ages 5 or 6 up to teenage sizes. All girls develop at different rates, and it's up to each girl and her family to decide when it's time to go first-bra shopping. Some good indicators that your girl has reached training bra age is that she's expressing interest in getting one. Beginning with lightly lined bras is an easy way to introduce girls to the basics of dressing as an adult, and it's OK to let her practice (or "train") even if she isn't quite ready for the real thing. Even if your girl hasn't let you know she's in the market for a bra, it might be time to buy her first bra if she's noticeably developing, experiencing pain from lack of support or starting to be active in sports. We've rounded up great training bras for tweens, from sports bras to bralettes, from retailers like Walmart, Target, Justice and Yellowberry.

If you're hitting the road — or rails or sky — anytime soon, you probably want to stock up on some great travel clothing essentials for your kids. Finding seasonal travel clothing that's comfy for your journey and cool for your activities is easier than you think. Check out this round up of awesome spring and summer travel clothing for kids from retailers like Old Navy, Nordstrom, Target, Amazon and more.

According to the American Academy of Pediatrics Childhood Sleep Guidelines, infants should sleep between 12 to 16 hours, while growing toddlers should grab between 11 to 14 hours of shut-eye. That's why picking the perfect crib mattress is key for a good night (and naptime) slumber for your little lamb.

While there are several factors to consider when choosing a crib mattress and setting up a safe sleep environment for your child. Parents should select "a firm mattress that is made for the crib, meaning perfect in size with a tight-fitting sheet," suggests S. Daniel Ganjian, MD, a pediatrician at Providence Saint John's Health Center in Santa Monica, California. "There should be no space between the mattress and the sides of the crib."

And other than a fitted sheet, there shouldn't be anything in the baby's bed, particularly during the first year. "The most common mistake that parents make is putting something in the crib besides a tightly swaddled baby," says Gina Posner, MD, a pediatrician at MemorialCare Orange Coast Medical Center in Fountain Valley, CA. "There should be no stuffed animals, no crib bumpers and no sleep positioners. Just make sure it is a new crib that is up to current standards."

Dr. Ganjian also advises against using an old crib and mattress. "Hand me downs used to be great, but now you really have to watch out for them, since many have been recalled or are dangerous because there is some subtle defect that you might not be aware of."

In celebration of Sleep Awareness Week, we've rounded up our top picks of comfy, crib mattresses with quality features to ensure that tired newborns and tots transitioning to a toddler bed sleep like babies so Mom and Dad can rest a whole lot easier.