We found tons of bargains in the F&F Sale yesterday and this one stood out for me as a great buy. It's an Avengers Onesie for children, but it's reversible so that you can be either Iron Man or Hulk as your mood takes you. It's also nearly half price being £8 or £8.50 depending on the size rather than £15 to £16.
This reversible Avengers Onesie is available in all sizes from 4 to 12 years, although age 7-8 is showing as low stock (I guess that's peak superhero fandom age).
Make sure you take a look at the rest of the F&F Sale* while you are on the website as there are some really great bargains with hundreds of new lines in the baby and kids sale.
You can click and collect for free from larger Tesco stores, home delivery is free when you spend £50, or £10 for Tesco Delivery Saver* customers, otherwise charges are from £3.99.