[_Kenzo_]

Dry ice is an excellent method it works extremely well. Don't be worried about trying it I did it in a country where its not common at all and not too easy to get hold of and was so incredibly easy and effective.

@mothered Thanks to you both for the reply. I am planning on use dry ice for some other methods, I was more referring to the fact that the weight is close to the 120g cut off and it may just be worth sending without. However, i'll time it when I purchase some dry ice for another boxing. I can only get 10kg at a time, so it'll be worthwhile if I already have some left over