Personalized Mantenga La Calma CDM Toddler T-Shirt. Cinco De Mayo Toddler T-Shirt - Football Blue and White with red hot chili pepper and KEEP CALM saying written in Spanish. Mantenga La Calma Es Cinco De Mayo. A toddler-soft cotton tee in look-at-me, big kid colors. 4.5 oz., 100% combed ringspun cotton. White is sewn with 100% cotton thread. Topstitched rib crew neck. Double-needle stitched sleeves and bottom hem. Shoulder-to-shoulder taping.