aussieBum is an Australian mens swimwear and underwear manufacturer. All aussieBum underwear and swimwear is manufactured in Sydneys inner west. Some aussieBum lifestyle and apparel products are manufactured overseas in Vietnam and Thailand and Bangladesh.aussieBum is an Australian mens swimwear and underwear manufacturer. All aussieBum underwear and swimwear is manufactured in Sydneys inner west. Some aussieBum lifestyle and apparel products are manufactured overseas in Vietnam and Thailand and Bangladesh.