The Grinch Baby Unisex Long Sleeve Coverall and Hat, Pink, 6-9M. Get your baby boy or baby girl ready for Christmas in this stylish and comfortable newborn and infant coverall featuring the mischievous one! Long sleeve Coverall is made of soft French Terry fabrication and has Grinch screen printed graphics on front, rib sleeve cuffs and leg cuffs with snap closure for easy wardrobe changes.