Personalized Sound Mixer Vintage Classic Toddler Sweatshirt. Authentic Sound Mixer Toddler Sweatshirt - White has Sound Mixer a real classic vintage occupation logo. Keep your little one cozy and stylish with this soft and durable toddler sweatshirt. Designed for comfort and ease of movement, it features a classic fit with ribbed cuffs and hem for added warmth. Perfect for everyday wear, playtime, or chilly outings, this sweatshirt is made to withstand the adventures of an active toddler