The Glimakra umbrella swifts are made from birch wood and are available  in two sizes.
The larger No. 60C for large skeins (2 metre in length) , and the most popular, smaller No. 61C, for average sized skeins (1.5 metres in length).
 
The Umbrella Swift is a wonderful accessory for anyone involved in a yarn craft. It takes the chore of holding a skein of yarn under tension so that you can unravel it easily to wrap your yarn into a ball.
 
Glimåkra Umbrella Swifts are quality products, made by craftsmen in Sweden.
 
Features:
Large Size – Adjustable circumference from 12″ to 100″
Birch Wood – finished in traditional Skandinavian style
Holds skeins up to two pounds and 100″ in circumference
Attaches to most tables, shelf or counter
Folds away when not in use
Can be used in conjunction with a ball winder