NORWIK juggling balls

The NORWIK juggling ball is a type of Russian style ball created by Norwegian juggler Kristian Wanvik in 2011. A NORWIK ball is constructed from a spherical and hollow plastic shell, and filled to about 20% of its total volume with fine-grained sand. The balls are offered in two different sizes:

75mm, 67 grams
60mm, 53 grams

In 2014, NORWIK introduced a new weighted ball named the Viking Norwik, which is offered in 75mm and 5 different weights:

134 grams
201 grams
268 grams
335 grams
402 grams

The standard size is by far the most popular model. NORWIKs are offered in 5 vibrant colors (yellow, orange, red, green, and blue) as well as white.

The NORWIK juggling balls have gained popularity since their release in late 2011, and are used by a number of jugglers worldwide. The NORWIK balls' biggest market is currently Scandinavia and northern Europe.

The NORWIK website lists several advantages of using NORWIK balls:

They are big enough to be visible on stage, and small enough to easily hold and release four with one hand.
They don't stick to each other or to your hands.
The sand makes them much easier to throw cleanly than other balls, including other Russians.
They are very light, so you can make high throws more easily and juggle longer without getting tired.
The don't wobble in the air like other Russian balls sometimes do.
They have more air resistance than smaller balls, so they move a little more slowly in the air.
They are very easy to catch due to all the sand going to the bottom of the ball.
They are very good for balancing, pinball style juggling, and BBB.
They have a very dead drop compared to other Russian style balls that are filled more.
A tiny air hole in the ball helps it keep its size and roundness better than other Russians.

Some jugglers that use NORWIKs:

Websites:

FANDOM