Here is what every size includes!
 
Small:
1 4oz Slime
1 1oz Slime
3-5 Candies/Extras
1 0.5oz activator
1 0.5oz DE-activator
1 Thank you card and care sheet
 
Medium:
2 4oz Slimes
1 1oz Slime
1 1oz activator
1 0.5oz DE-activator
5-10 Candies/Extras
1 Thank you card and care sheet
 
Large:
3 4oz Slimes
2 1oz Slimes
2 1oz activator
1 1oz DE-activator
10-15 Candies/Extras
1 Thank you card and care sheet
 
Extra Large:
4 4oz Slimes
3 1oz Slimes 
2 1oz activator
2 1oz DE-activator
15-20 Candies/Extras
1 Thank you card and care sheet