It is a drum. About twenty-eight centimetres across, thirty-two tall, and it stands on the floor beside your chair like a small barrel of wool. Unzip the lid and the whole top comes off at once — no reaching down a narrow opening, no digging. Six balls go in, side by side, and you can see every one of them.
Zip it shut and the yarn keeps working. Four grommet holes sit in the lid, set into two long slots, and the strands run up out of them while the balls turn quietly inside. Nothing rolls across the room. Nothing comes back covered in cat hair.
Crochet hooks and knitting needles live in the pockets around the outside, standing upright where you can reach them without putting your work down. One pocket is mesh, so you can see the scissors. Lift it by the moulded handle across the lid, or clip on the shoulder strap and carry the lot to a class with your hands free.

A tote sags. You put four balls of yarn in a flat-bottomed tote and it folds around them, the yarn settles into the corners, and by the time you get where you are going the strands have found each other.
A drum holds its shape whether it is full or nearly empty. The balls sit in a single layer rather than piling on top of each other, so the one you want is never underneath the other five. And because the lid unzips right around, the bag opens to its full diameter — the whole project is in front of you at once.

They run around the body of the drum on the outside, so they do not eat into the space where the yarn goes.
About six 100 g balls with room to work — that is a buyer's own count, not ours. In practice: a jumper's worth of wool, a blanket in progress, or three or four projects parked together between sessions.
It is the bag for the yarn that will not fit anywhere else, and for the maker who would rather keep one project fully loaded than repack a tote every time.

Against a flat-bottomed knitting tote. A tote carries more shapes of thing but keeps none of them in order. This keeps a single project upright, visible and feeding.
Against a small project bag. A project bag is right for a sock or a hat. It will not take a jumper's worth of wool, and it has nowhere to stand a full set of hooks.
Against a basket by the chair. A basket is open — to dust, to the cat, to a toddler. This zips, and it travels.
How much yarn actually fits?
Around six 100 g balls with working room. One buyer packed exactly that and said so in his review, which is a better figure than anything a tape measure gives you.
Can I keep knitting with the bag closed?
Yes — that is what the four holes in the lid are for. Feed the strand through before you zip it, and the ball stays inside turning while you work.
Is the shoulder strap removable?
It is. Two swivel clips, adjustable webbing, on and off in a second. The moulded handle on the lid stays either way.
Does it stand up on its own when it is empty?
It does. The base is a flat circle, 28 cm across on the plain colourways and 27 cm on the prints, and the sides are structured, so it holds its shape whether it is packed or nearly empty.
Will it survive a wet walk to a class?
The 600D Oxford sheds a shower and wipes clean. Water-resistant rather than waterproof — do not soak it, and let it dry open.
What is the difference between the plain colours and the prints?
Construction is the same: same drum, same lid, same grommets, same pockets. Gray, Black, Purple and Red Rose are heathered plains; Geometrical, Blue Boho, Green Peony and Rainbow Leaves are printed.
Load it once. Work out of it for a month.