Asian Handicap is a way of betting on soccer where the draw option is removed. So instead of a standard 3-way line (Team A / Team B / Draw) you are only given the option to bet on Team A or Team B.
The Asian line is exclusive for soccer betting, and you can bet on handicaps or totals.
The Asian line gives you two chances to bet in one (two lines + a single odd). The risked amount and total winnings are divided into two bets with equal amounts.
Asian lines will always show two values with a half-point difference, generating a double chance for the player to cover what is wagered in the event of a tie or push in one of the lines.
More details on the specific betting options for Asian Handicap are explained in the Ways to bet Asian Handicap article.