This is the official 2023-24 third match jersey of Athletic Club Bilbao, designed and manufactured by Castore. The jersey features a striking light blue base with an intricate all-over tonal pattern of stylized lion heads—symbolizing strength and club identity—rendered in varying shades of blue for depth and texture. It has a classic V-neck collar with navy trim, matching navy piping on sleeve cuffs, and the club’s historic shield crest centered above the sponsor logo. The front prominently displays 'Kutxabank' as the main sponsor in bold black-and-white lettering. A LaLiga SmartBank (Segunda División) sleeve patch (B2 P) confirms its use in Spain’s second tier. Made from high-performance moisture-wicking fabric, it offers breathability and comfort for both match play and fan wear. The inner neck tag bears 'CASTORE' branding, affirming authenticity. Ideal for supporters attending matches, casual streetwear styling, or sporty summer outfits—combines heritage pride with modern athletic design. Perfect for daily wear in warm seasons, especially during football season, and appeals to collectors of Spanish club kits.