4 oz / 4A oz
4 oz is for spinning fine yarns, and 4A is accelerated - engineered specifically for superfine yarns and short staple length fibers. Available on the Pollywog, Echo, Monarch, Firefly.
This size is Pollywog exclusive and is only available as an upgrade to the Pollywog.
8 oz is similar to most standard size bobbins. Many spinners find this size ideal for spinning and plying all fine & medium weights of yarn except bulky. Available on the Echo, Hopper, Monarch, Firefly.
This size is ideal for production art and bulky yarn spinners who need large amounts of yardage for big projects, or need extra room for plying big skeins. Beginner art yarn spinners may find the 16 oz more manageable. Available on the Echo, Hopper, Monarch, and Firefly.
This size is an ideal starting point for spinners wanting to spin bulky. It is large enough for art yarn, and small enough to make yarns a manageable size for working with and selling. Available on the Echo, Hopper, Monarch, Firefly.
This size is exclusive to SpinOlution, and is the biggest bobbin size in the industry. Expert production spinners find this size ideal for spinning single-ply bulky weight yarns. Each one is crafted and balanced by hand. Available on the Monarch and Firefly.