Crocs All-Terrain Multicolor Sandal-(208254-2Y3)-2 UK Men/ 2 UK Women (M2W4)

Is the sizing the same as other crocs? my other crocs are women6/men4 but in regular shoes i am an 8.5 regular,

Actual weight per pair/size?

Is this comfortable with a severe wide bunion?

Can this item be returned if it doesn't fit?