Personalized Keep Calm Black Friday Toddler Long Sleeve T-Shirt. Funny Toddler Long Sleeve Tee - Black for Black Friday shopping with snowflake sales tag graphic says I CAN'T KEEP CALM IT'S BLACK FRIDAY. Get ready for after Thanksgiving markdowns! 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.