【Exciting Wash & Reveal Adventure】Start the fun with our Monster truck toys! This set includes 4 uniquely designed trucks covered in special "mud" paint. By washing them using the included dropper or simply rinsing with water to reveal the truck's true colors and designs. This engaging monster truck car wash activity is perfect for boys and girls aged 3-5 6-8. The water-washable play design making the reveal process a surprise for kids. 【Safe & Washable "mud" Paint】The special "mud" paint on our toy trucks for boys adds a unique layer of fun. Kids can wash the trucks to reveal truck toys true colors and style designs. The water-washable paint is safe and easy to remove, ensuring a fun and mess-free experience. This feature enhances the play experience by adding an element of discovery and surprise. 【Durable Construction for Long-Lasting Play】Built to last, these monster trucks for toddlers are made from durable ABS material. These monster trucks for boys feature 4 shock-absorbing springs for smooth rides and large rubber feet wheels that provide excellent grip and stability. Designed for monster truck toys for kid enthusiasts, these trucks are built to withstand the test of time and play. 【Develops Hand-Eye Coordination & Skills】Push the toy trucks for kids forward to build up power, then release it to watch it speed forward. This simple yet engaging play mechanism helps develop hand-eye coordination and motor skills. 【Perfect Gift for 3 4 5 6 7 8 Year Old Kids】Looking for the ideal present for kids aged 3-5 6-8? Our monster truck set is a fantastic choice. The wash-to-reveal feature make these trucks perfect for birthdays, holidays, or special treats. With engaging “Mystery Trucks Toys” play, they're sure to delight toddlers and kids too. Start with the wash, then enjoy endless play!