Personalized Mechanical Snowman Toddler Long Sleeve T-Shirt. A snowman holding a gear and wearing a scarf with gears is a humorous mechanical design. Fun gifts for mechanics and mechanical engineers at birthdays and holidays. A classic for Fall, Winter and Spring, these long sleeve toddler t-shirts are sure to be a staple in your child's wardrobe. Whether layered or alone, this t-shirt is soft yet durable enough to stand up to your toddler's playtime demands.