Features: Easy to use: Inflate to ≤90% with hand pump or helium tank, seal tightly. Deflate easily using the included straw, fold for storage. Simple to set up quickly. Widely used: 4rd birthdays, kindergarten events, Halloween, superhero gatherings. Decorates rooms, classrooms, backyards; matches costumes, acts as photo backdrop—year-round hit. Specifications: Color:Red Blue Package includes:20PCS Notes: Manual measurement, please allow a slight error in size. There may be slight color differences due to different screen displays.