Here are the details, positive and negative aspects, and materials/ingredients of some kids lawn mowers based on the search results:

1. JUMELLA Automatic Lawn Mower Bubble Machine with Music for Kids

• Details: The lawn mower is automatic and comes with a bubble machine and music. It is designed for outdoor use and can be used as a baby activity walker or push toy for toddlers. It is available in green color.
• Material: The lawn mower is made of Acrylonitrile Butadiene Styrene (ABS) material.

2. Pop & Spin Mower

• Details: The lawn mower is a toy that introduces gardening basics, lawn mower safety, and colors to little ones with phases, lights, and music. It is designed to be safe for kids.
• Positive: The lawn mower is designed to be safe for kids.
• Negative: No negative aspects were found.
• Material: The material of the lawn mower is not specified.

3. Little Tikes Gas n Go Mower

• Details: The lawn mower is a toy that lets children mimic the activity they see every day in the world around them. It has sounds and hands-on features.
• Positive: The lawn mower lets children mimic the activity they see every day in the world around them.
• Negative: No negative aspects were found.
• Material: The lawn mower is made of plastic.

4. Remote Control Lawn Mower

• Details: The lawn mower is a remote-controlled toy that can be built using a new mower and a chair. It is designed for a wheelchair user to keep their lawn mowed.
• Positive: The lawn mower is designed for a wheelchair user to keep their lawn mowed.
• Negative: The cost of materials is around $600-700.
• Material: The lawn mower is made of a new mower and a chair.

5. Gas Mower Pollution Facts

• Details: Gas mowers emit hydrocarbons and oxides of nitrogen, particulate matter, carbon monoxide, and carbon dioxide, which are damaging to the respiratory system and contribute to global warming. They also release 25-30% of their oil and gas unburned into the air.
• Positive: No positive aspects were found.
• Negative: Gas mowers emit pollutants that are damaging to the respiratory system and contribute to global warming.
• Material: Gas mowers emit hydrocarbons and oxides of nitrogen, particulate matter, carbon monoxide, and carbon dioxide.