I found a really clear explanation at https://casino.spot/blog/sticky-non-sticky-casino-bonuses/. Essentially, a sticky bonus is tied to your deposit balance—you must meet the wagering requirements before withdrawing any winnings, and the bonus itself cannot be cashed out. In contrast, a non-sticky bonus (sometimes called a “parachute bonus”) keeps your deposit and bonus separate. This allows you to withdraw any winnings made with your real money before touching the bonus. The article explains how non-sticky bonuses give you control and flexibility, especially if your first bets go well. After reading through it, I feel better equipped to compare bonus types and pick the one that suits my playstyle and budget.