Toddler Penguin Polo and T-Shirts (Sz. 4T)

I have 2 Penguin T- Shirts in used condition. - the Maroon shirt the picture is a little cracking but the shirt is still in good condition. - The white T-Shirt is in good condition The Polo Penguin T-Shirt has a little stain near the collar. I think stain remover or a light hand wash would remove. All these shirts are size 4T