Mermaid Tail Blanket in Deramores Studio Chunky Acrylic - Downloadable PDF

Mermaid Tail Blanket Crochet Pattern by Alison Holloway – Pattern Summary

This Mermaid Tail Blanket is a fun and imaginative crochet project designed by Alison Holloway and published by Deramores. Available as a downloadable PDF, the pattern creates a cosy, wearable blanket shaped like a mermaid's tail — perfect for snuggling up on the sofa. The design is rated intermediate in difficulty, making it a rewarding project for crocheters who are comfortable with basic stitches and ready to explore more textured, structured techniques.

What Is Being Made

The finished object is a mermaid tail blanket — a sack-style blanket that wraps around the legs and tapers at the bottom to mimic the shape of a mermaid's tail fin. It is both a decorative and functional piece, designed to be worn or used as a throw. The pattern comes in two sizes: a Child size (aged 6–12) and an Adult size, making it a versatile make for the whole family. Where instructions differ between sizes, the Child size is given first, followed by the Adult size in brackets.

Yarn and Materials

The pattern is written specifically for Deramores Studio Chunky Acrylic yarn, a chunky weight yarn that works up quickly and produces a wonderfully soft, substantial fabric. Three colours are used to create the signature mermaid scale effect:

• Yarn A: Blue Velvet (with alternative colourways listed as Aubergine or Carnation) — 5 (6) x 100g balls
• Yarn B: Cornflower (alternatives: Heather or Salmon) — 5 (6) x 100g balls
• Yarn C: Frost — 5 (6) x 100g balls

The three-colour palette gives the blanket its distinctive aquatic, scaled appearance, and the alternative colourways offered allow crafters to personalise their make. A 10mm crochet hook is required throughout the pattern.

Tension and Sizing

Achieving correct tension is important for this pattern to ensure the blanket fits as intended. The stated tension is:

• 1 pattern repeat of Round 5 (the scale round) = 7cm in width
• 1 pattern repeat (Rounds 5–7) = 6cm in length

Checking tension before beginning the main body of the blanket is recommended, particularly because the scale motif is a repeating structural element that determines the overall dimensions of the finished piece.

Techniques and Construction

The Mermaid Tail Blanket is worked in the round, building up from the tail fin section and expanding outward to form the body of the blanket. The distinctive mermaid scale texture is created through a repeating pattern sequence across Rounds 5–7, which forms the central decorative feature of the design. This scale round is worked at a regular interval, giving the blanket its characteristic overlapping, fish-scale appearance.

Construction uses a combination of shaping rounds and textured pattern rounds, requiring the crocheter to follow size-specific instructions carefully. The pattern uses clear notation to distinguish between the two sizes throughout.

Stitches Used

The pattern makes use of a range of standard crochet stitches, all referenced using UK crochet terminology:

• Chain (ch) — used for foundation chains, turning chains, and chain spaces
• Double Crochet (dc) — a short, tight stitch used for structure and shaping
• Half Treble Crochet (htr) — a mid-height stitch; the beginning 2ch counts as the first htr throughout
• Treble Crochet (tr) — the primary stitch used in the scale and body sections; the beginning 3ch counts as the first tr throughout
• Chain Space (ch-sp) — used in conjunction with treble crochet