A pole sleeve is sewn onto the flag, creating a tunnel through which the pole is inserted. This tunnel is made of durable polyester material (600 denier) and is available in black or white.
The pole should be fully inserted into the pole sleeve until the tip presses against the end. After that, you can tension the flag and secure it with the clamp ring.
For the Block model, the pole sleeve consists of a vertical and a horizontal section, with the curve of the pole visible in between.
