<human>: Recently, one of my best friends had bought me a Herschel Supply Co. Backpack. [Here,] you can find what it looks like and how much it costs. I'm very anal about the things I own, especially when it comes to something that has to do with both aesthetics and functionality. So the bag is about $100USD but it's the one I don't want. The bag I wanted goes for $170 as it has more space and a far better aesthetic value. You can find that [here] My friend had shipped it to me without my knowledge but yesterday overheard me say the exact bag I wanted. I don't know if I should tell my friend that I don't like it. 

My friend did message me once they got the delivery confirmation and said "Im pretty sure it's not the one you want. That's why I said you can return it if you want. There should be a return label in there. They didn't have the leather straps for that bag, which I know you wanted more... Sorry." 

Can anyone offer me what I could/should do? I really don't want to hurt my friend's feelings but I also don't want their money to go to waste.

Give me the gist of the text in a nutshell
<bot>: Friend got me a gift that I didn't want and knows I don't want anymore. I don't know what to say or do without hurting their feelings.