Carlill v The Carbolic Smoke Ball Ltd HL (TCSB)
facts: comapny placed advert for patent medicine- would prevent people catching flu, if they caught the flu £100 would be paid
mrs c caught flu after using smoke ball correctly, company refused to pay- advert was ITT
advert was offer as it was so detailed, could be accepted by anyone who used smoke ball correctly
if advert indicates course of action in return for which avertiser makes promise to pay, bound by promise