Choosing knitting & crochet yarn gets tricky when a 10-pack of Merino wool faces cotton crochet yarn in a #4 Worsted Medium format. The practical choice is whether your project calls for the wool pack's format and intricate-design focus, or the cotton yarn's familiar weight label and named uses for washcloths, facial rounds, and blankets. Here is the short answer: Merino suits wool-focused knitting and crochet plans, while cotton is the more direct match for shoppers starting with a worsted-weight label or cotton-specific project.
Quick verdict
Choose 100% Merino Wool Yarn 10 Pack when wool, a multi-skein format, and a knitting-or-crochet DIY project are central to the brief. Choose Pure 100% Cotton Crochet Yarn when the #4 Worsted Medium label and cotton's practical household uses fit the project better. The price spread is $15.51, making the fiber and format decision just as important as the amount spent.
At-a-glance comparison
| Factor | 100% Merino Wool Yarn 10 Pack | Pure 100% Cotton Crochet Yarn |
|---|---|---|
| Price | USD 25.00 | USD 9.49 |
| Pack format | 10-pack; 50g skeins | 50g skeins |
| Fiber and yarn format | 100% Merino wool | 100% cotton; #4 Worsted Medium |
Where each yarn wins
Merino wins for a project that needs the 10-pack, the named Lake Blue 220 color, or a wool-specific knitting and crochet direction. Its description also points toward intricate designs. Cotton wins when color planning around the 30-color title matters, or when the intended project is a washcloth or facial round. Neither choice should be declared better from a number alone: the yarn descriptions use different specifications, so pattern language and finished-item plans should lead the decision.
Product notes
100% Merino Wool Yarn 10 Pack

100% Merino Wool Yarn 10 Pack is the clearer fit when a project brief centers on 100% wool and knitting or crochet DIY work. A concrete reason to choose it is the description's focus on intricate designs, paired with specific care guidance: it is described as non-chlorine bleach-friendly and suitable for ironing at 120°C (250°F). Those details give finishing and handling more structure during project planning. The limitation is specification fit. The yarn is described with a 0.5 mm diameter and 14s/2 thickness rather than the #4 Worsted Medium wording attached to the cotton yarn, so a pattern selected by that exact weight label points elsewhere. Lake Blue 220 also gives shoppers a clear color direction.
Pure 100% Cotton Crochet Yarn

Pure 100% Cotton Crochet Yarn is a sensible match for shoppers who want cotton crochet yarn in a #4 Worsted Medium format. Its description says the cotton tends to get softer with washing, which is a concrete reason to choose it for projects that will be washed regularly. The same description identifies an unmercerized matte finish and describes cotton as absorbent, but the main limitation is skein planning: each skein is specified at 85 yards, a shorter stated unit than the Merino description's 345 yards per skein. That matters when estimating how many skeins a longer project may require. The USD 9.49 price is the lower of the pair, but the deciding advantage remains the cotton fiber and familiar worsted format.
Final choice by use case
For a wool-specific project built around the Merino description's 0.5 mm and 14s/2 specifications, choose 100% Merino Wool Yarn 10 Pack. For washcloths, facial rounds, or a project where a matte, absorbent finish is the priority, choose Pure 100% Cotton Crochet Yarn. If the price spread is decisive, the cotton yarn is $15.51 below the Merino pack. In short, Merino is the focused wool choice; cotton is the practical pick when the project starts with worsted-weight language or washable cotton use.