Malabrigo Rios, Arroyo, and Ultimate Sock: which one is right for your project?
If you have discovered Malabrigo and want to try it for the first time, or if you know the brand but are not sure which of the three bases we stock is right for what you want to make, this post is for you. Rios, Arroyo, and Ultimate Sock are three quite different yarns — different weights, different constructions, different fibre compositions, and suited to quite different projects — but they share the Malabrigo DNA that makes the brand what it is: exceptional softness, kettle-dyed colour with real depth and tonality, and a quality that knitters tend to find immediately recognisable.
All three are £14.95 per skein at Craft and Canvas. All three are stocked with a selection of Malabrigo's characteristically rich colourways.
Malabrigo Rios — the workhorse worsted
100% superwash merino wool | Worsted weight | 4-ply | 210 yards per 100g skein | Machine washable
Rios is the most widely used base in Malabrigo's range and the one most knitters encounter first. It is a worsted weight yarn — the standard medium weight used in the majority of garment and accessory patterns — spun as a four-ply construction from 100% superwash merino.
The word Rios means rivers in Spanish, and there is something apt in that name — the kettle-dyed colours in Rios have a flowing, watercolour quality, with tones shifting and transitioning within each skein in a way that produces knitted fabric with a richness and movement that flat, uniformly dyed yarn simply does not.
The four-ply construction gives Rios excellent stitch definition and good resistance to pilling — a known vulnerability of single-ply yarns, including some of Malabrigo's other bases. The superwash treatment means the finished fabric can be machine washed on a gentle, cold cycle, which matters greatly for garments that will be worn and washed regularly. This combination of soft hand, beautiful colour, easy care, and reliable stitch definition is what has earned Rios its reputation as Malabrigo's workhorse — it is the base you reach for when you want the full Malabrigo experience in a yarn that will genuinely stand up to regular use.
What Rios is best for: jumpers, cardigans, hats, cowls, mittens, and any garment or accessory that needs to be worn and washed frequently. At worsted weight it knits up relatively quickly, which makes it satisfying for larger projects. The stitch definition makes it equally good for textured patterns — cables, twisted stitches, and colourwork — as for straightforward stocking stitch.
How much do you need? Each skein is 100g and 210 yards. A standard adult jumper typically needs 8–12 skeins depending on size and style. A hat or cowl uses 1–2 skeins. Mittens use 1–2 skeins.
Malabrigo Arroyo — the versatile sport weight
100% superwash merino wool | Sport weight | Plied | 335 yards per 100g skein | Machine washable
Arroyo — the Spanish word for a brook or stream, a smaller counterpart to Rios — is Malabrigo's sport weight base. It sits between fingering weight and DK in terms of thickness, producing a finer, lighter fabric than Rios while still being accessible and relatively quick to knit.
Sport weight occupies a genuinely useful but sometimes overlooked position in the weight spectrum. It is finer than DK, which means garments knitted in it have a lightness and drape that heavier weights cannot match, but it is substantially faster to knit than fingering weight and considerably more forgiving of small tension inconsistencies. For knitters who find fingering weight too slow or too demanding for sustained garment knitting but want something more refined than DK, Arroyo is a very natural answer.
Like Rios, Arroyo is 100% superwash merino and machine washable. The 335 yards per skein — considerably more than Rios at the same weight — reflects the finer construction, and means that each skein goes further in the finished project. The colour quality is identical to the rest of the Malabrigo range — the same kettle-dyed depth and tonality that gives all Malabrigo yarn its distinctive character.
What Arroyo is best for: lightweight jumpers and cardigans where drape is important, baby garments, shawls and wraps, fine-gauge colourwork, and any project where you want Malabrigo's colour quality in a lighter, drapier fabric than worsted weight produces. It is a particularly good choice for adult garments that will be layered — the lighter weight and drape make it more wearable under other clothing than a full worsted-weight jumper.
How much do you need? Each skein is 100g and 335 yards. A standard adult jumper in sport weight typically needs 8–12 skeins. A shawl uses 2–4 skeins. A baby garment might use 2–4 skeins depending on size.
Malabrigo Ultimate Sock — the luxury sock yarn
75% superwash merino / 25% nylon | Fingering weight | 4-ply | 420 yards per 100g skein | Machine washable
Ultimate Sock is Malabrigo's dedicated sock yarn base, and it is where the brand's commitment to softness meets the practical demands of a yarn that needs to survive the considerable wear and friction that socks experience. The 25% nylon content — not present in either Rios or Arroyo — is what makes this possible. Nylon adds durability and abrasion resistance that pure merino cannot match for high-wear applications, without compromising the softness of the merino or the ability of the fibre to take the kettle-dyed colours that Malabrigo is known for.
The result is a fingering weight yarn that is exceptionally soft — softer than most nylon-blend sock yarns — while being genuinely durable enough for actual socks worn and washed regularly. The 420 yards per 100g skein is the most generous yardage of the three bases, which is characteristic of fingering weight construction and means each skein covers considerable ground in the finished project.
The colourways in Ultimate Sock are the same richly kettle-dyed palette as the rest of the Malabrigo range, and the fine weight means the colour variation within each skein is particularly visible in the finished fabric — the transitions and shifts of tone that come from the kettle-dyeing process appear as long, flowing colour changes that produce beautiful self-striping or pooling effects depending on the needle size and stitch pattern used.
While Ultimate Sock is named for and designed for socks, it is far from limited to them. Fingering weight yarn is used for a wide range of projects — fine shawls and wraps, delicate colourwork, lightweight accessories, and small garments where a refined, lightweight fabric is wanted. The added nylon actually makes Ultimate Sock a good choice for accessories that experience regular friction beyond just socks — fingerless mitts, the heels of slippers, and similar applications.
What Ultimate Sock is best for: socks of course, but also fine shawls and wraps, delicate accessories, lightweight colourwork, and any project where you want the finest, most delicate fabric the Malabrigo range can produce.
How much do you need? Each skein is 100g and 420 yards. A standard pair of adult socks typically uses one skein (100g) for most women's sizes and up to two skeins for larger sizes or longer legs. A fine shawl might use 2–4 skeins. Fingerless mitts use approximately half a skein each.
How to choose between the three
If you are not sure which base to start with, the following questions help narrow it down.
What are you making? If it is socks or fine accessories, Ultimate Sock is the obvious choice — the nylon content makes it genuinely durable for high-wear applications. If it is a jumper, cardigan, hat, or cowl in a standard weight, Rios is the most natural starting point. If you want a lighter, drapier garment or a shawl in something heavier than fingering, Arroyo fills the gap.
How much time do you want to spend? Worsted weight knits fastest — Rios will give you a finished hat or cowl in a fraction of the time that Ultimate Sock would. Fingering weight takes considerably longer but produces a more refined fabric. Arroyo sits between the two.
How demanding will the finished item be in use? Socks and items that experience friction and frequent washing benefit from the nylon reinforcement in Ultimate Sock. Garments that will be washed gently and worn without hard abrasion are perfectly served by the pure superwash merino of Rios or Arroyo.
Do you want to try Malabrigo for the first time? Rios is the most accessible starting point — the worsted weight knits up quickly enough that you can see a finished object in a reasonable timeframe, the four-ply construction is easy to work with and shows stitch definition well, and at 210 yards per skein a single skein gives you enough yarn for a substantial accessory without a large financial commitment.
A note on dye lots and alternating skeins
All three Malabrigo bases are kettle-dyed by hand, which means variation between skeins is inherent in the product. Even within the same dye lot, individual skeins can vary slightly in tone or depth. For any project requiring two or more skeins, the standard practice is to alternate skeins — working two rows or rounds from one skein and then two from another — so that any variation is distributed evenly across the fabric rather than appearing as a visible stripe or join. This is particularly important with Malabrigo given the colour depth and the kettle-dyed variation that is part of the yarn's character.
Frequently asked questions
Which Malabrigo base is softest?
All three are made from Malabrigo's characteristically soft superwash merino and are exceptionally soft by any standard. Ultimate Sock contains 25% nylon which adds durability without meaningfully affecting the softness for most people. If softness is the only criterion, Rios and Arroyo — pure superwash merino — are marginally softer, but the difference is subtle.
Can I use Rios or Arroyo for socks?
Technically yes, but both are pure superwash merino with no nylon reinforcement, which means they will not wear as well in high-friction areas like the heel and ball of the foot as Ultimate Sock will. For socks intended to be worn hard and washed frequently, Ultimate Sock is the better choice. For loose, drapey socks or bed socks that will not experience heavy wear, Rios or Arroyo would be fine.
Are Rios, Arroyo, and Ultimate Sock all machine washable?
Yes — all three are superwash treated and can be machine washed. Use a gentle cold cycle and lay flat to dry. Do not tumble dry.
Do all three bases come in the same colourways?
Not exactly — Malabrigo produces different colourways for different bases, and the colourways available in each base vary. Some colours appear across multiple bases, others are unique to one. The selection we stock at Craft and Canvas reflects our chosen colourways for each base — come in or browse online to see what is currently available.
Which is best value for money?
All three are £14.95 per skein at Craft and Canvas. In terms of yardage, Ultimate Sock gives the most yards per pound — 420 yards per skein — followed by Arroyo at 335 yards and Rios at 210 yards. However the appropriate comparison is always yardage against gauge — fingering weight projects require more yards to cover the same area than worsted weight, so the higher yardage in Ultimate Sock is offset by the finer gauge at which it knits.
Shop Malabrigo at Craft and Canvas
We stock Malabrigo Rios, Arroyo, and Ultimate Sock at £14.95 per skein, with a selection of colourways in each, at Craft and Canvas in Hebden Bridge and online at craftandcanvas.co.uk.
Craft and Canvas | 3 Carlton Street, Hebden Bridge, HX7 8ER | craftandcanvas.co.uk