Here is a man and bikini that defies all others :)

[Byron]

The trouble is we are trying to ID a red bikini style where there is no upright pic and no brand logo to see.
Such a common suit could be on sale from hundreds of outlets around the world.
For style cachet I would go for the briefer Marcuse over the TYR . I will rely on others to recommend a supplier but there are many selling TYR suits and simply searching TYR men's swim briefs on Google will produce some answers to browse (Arena is worth looking for too).
Side seam depths are a frequent omission in some websites and a question on "contact us" is advisable to ascertain details and to avoid disappointment from an ill judged/presented image if a particular suit looks to be just what you want to order.

For example I recently spotted a red "Speedo Lifeguard Bikini Performance" suit and it was the text which then pulled me up short as it is not a speedo but a bottom intended for the lifeguard girls.