A dual-bearing reel includes a reel unit, a spool and a handle. The reel unit includes a frame having an opening portion and a first side cover capable of being disposed in the opening potion. The spool is rotatably attached to the frame. The handle is configured to rotate the spool. The first side cover includes a cover body having an aperture and a blocking member blocking intrusion of a foreign object through the aperture. The blocking member is configured to be attached to the cover body on a side of the cover body facing the interior of the frame 17 by elastic deformation. Further, the blocking member is retained on the cover body by a resilient force of the blocking member 61.對於雙軸承捲線器,實現蓋部的輕量化及組裝性的提高。雙軸承捲線器(10),是具備:捲線器本體(11)、及捲筒(14)、及操作桿(12)。捲線器本體(11),是具有:設有開口部(27c)的框架(17)、及可配置於開口部(27c)的第1側蓋(18a)。捲筒(14),是可旋轉自如地裝設於框架(17)。操作桿(12),是將捲筒(14)旋轉用者。第1側蓋(18a),是具有:設有孔部(128a)的蓋本體部(28a)、及防止來自孔部(128a)的異物的侵入的異物防止構件(61)。異物防止構件(61),是藉由使彈性變形,在蓋本體部(28a)面向於框架(17)的內部的側,被裝設於蓋本體部(28a)。且,異物防止構件(61),是藉由異物防止構件(61)的復原力,被保持於蓋本體部(28a)。18a‧‧‧第1側蓋部(蓋部的一例)18d‧‧‧開口部28a‧‧‧蓋本體部28b‧‧‧連結部28d‧‧‧外周部61‧‧‧異物防止構件61a‧‧‧本體部128b‧‧‧突出部128c‧‧‧保持部128d‧‧‧外周部