Co-Op Cycles is a line of bicycles branded by REI. Its lightweight aluminum frame and low stand-up height make it easy to maneuver. Rear coaster brakes are intuitive to use: simply back off to engage the brakes. Removable auxiliary wheels and built-in full-length chain guard help kids learn to ride without worrying about getting their pants stuck in the chain. REV is also backed by REI's amazing return policy, which makes it a breeze. In addition, this bike is available in
12",
16" and
20", you can choose according to your child's height. A new-generation chainguard protects legs from dirt, grease, and pinching. The riding position is upright, with plenty of visibility.

Simple, intuitive and extremely lightweight, Woo bikes have been carefully designed to make riding as natural as possible.
The Woom 2 provides a seamless transition from a balance bike to a bicycle without auxiliary wheels for kids ages 3 and up. At 12.3 pounds, the woom 2 is one of the lightest bikes in the world. Children quickly and intuitively learn the skills they need to ride: balance, rest and pedaling. With the wool bike, important moments of childhood become unforgettable!

The Riprock 12 is smaller and easier to handle than almost every other pedal bike on the market. It’s sized and designed to make the transition from a balance bike easy and fast for young riders who have the ability to start pedaling on their own. Built with extra sturdy components and an A1 premium aluminum frame, this bike also features 12x2.3-inch Rhythm Lite tires so your little one can traverse any terrain with confidence, traction and stability, making them more fun , and you don't have to worry about their safety.

The 16-inch Major Damage boys bike is perfect for boys looking for a bright BMX frame. This gorgeous bike has an adjustable seat, matching handlebars, pedals and adjustable auxiliary wheels, and weighs under 25 pounds.

Fresh tropical fruit and popsicles adorn the Pink Lemonade frame, while palm trees and flowers await the ocean breeze. With fun designs running through the fenders, chain guard and custom saddle to bring summer joy to every two-wheeled adventure, this is a beautiful and high-quality bike for girls.
6.The Best Kids Bikes for Aggressive Riders: Colley Bicycle

Rugged and durable, Cleary Bikes are ideal for adventurers in your neighborhood. Cleary bikes with steel frames are only a tad heavier than brands like woom, but these bikes are built to stand the test. The Cleary Bike is ideal for kids who are passionate about riding and pushing their bikes to the limit. The Hedgehog keeps things simple with an easy-to-learn single-sprocket setup, making this bike perfect for driving down the driveway, tumbling in the backyard, and getting around sleeping dogs while your kids improve their balance and pedaling skills.
How do I choose the right size bike for my child?
Size:
Unlike adult bikes, which are classified by frame height, kids bikes are measured by wheel size. These sizes range from 12-inch wheels (for toddlers) to 24-inch wheels. Getting the correct size kids bike is vital to your child's interest as well as safety. If you buy a bike that is too large, they may not be able to reach the pedals or handlebars, but the size of the bike can also affect its handling, and the wrong size can be difficult to control. Most brands have their own size charts to help you decide which size you should buy. Here's a quick guide to help you with your bike wheel size:

Style:
New riders (ages 2 to 4) may be more comfortable starting with a learning tricycle or balance bike, which allows them to glide while lifting their feet or quickly place their feet on the ground to stabilize themselves. Children between the ages of five and seven are usually ready to ride a two-wheeled bike. Many bikes designed for kids this age offer assist wheels that can be removed once kids feel confident pedaling without balance assistance. Older kids can ride traditional bikes with more advanced pedals and braking.
Durability:
Children's bikes should be well constructed and strong enough to withstand tipping over. It may be tempting to be the cheapest kids bike, but flimsy bikes won't stand up to heavy use. Unless you're shopping for a home balance bike, be sure to look for bikes made of steel, aluminum, titanium, or a combination of the three. Wheels and tires should be strong and durable.