There are several options for kids nail polish, each with their own ingredients and features. Here are some details on a few popular options:

1. Klee Peelable Water-Based Nail Polish: This nail polish is peelable and claims to have a more chemical-free formula. It is made with nitrocellulose and does not require non-acetone polish remover.

2. Kid Licks Edible Ingredient Nail Polish: This nail polish is made with edible ingredients and is safe for even the youngest children. It is durable and comes in a variety of colors.

3. SuncoatGirl Water-Based Nail Polish: This nail polish is water-based and does not contain phthalate plasticizers, toluene, formaldehyde, acetates, alcohol, glycol ethers, or FD&C dyes. It is virtually odor-free and peels off when ready.

4. Piggy Paint Non-Toxic Girls Nail Polish: This nail polish is non-toxic, virtually odorless, and safe for all ages. It is water-based and does not contain parabens or harsh chemicals. It dries hard and does not peel off.

5. Airdom Kids Nail Polish Set: This nail polish set is water-based and free of formaldehyde, benzophenone, and heavy metals. It is quick-drying and comes with a top and base coat.

Positive features of these nail polishes include being non-toxic, water-based, and safe for children. Some are even made with edible ingredients. Negative features may include limited color options or the need for a specific type of polish remover. It is important to check the ingredients and features of each nail polish before use to ensure it is safe for your child.