It is a net bag with a neon yellow big pouch printed with the logo of the initial "S18" of "SUMMER 2018".
The contrast of black x neon yellow is cute ♪

■ Net bag
[Size] Body: Approx. 340mm x 400mm, Handle: 20mm wide, 710mm long (exposed part)
[Material] cotton
[Country of origin] China
■ Pouch
[Size] Approximately 200mm in width X approximately 150mm in length X gusset approximately 70mm
[Material] Outer fabric: synthetic leather, lining: polyester
[Country of origin] China