1/5Seashell Cup Cozy
Original design by @钩韵时光集
A seashell-shaped cup cozy with a chain-net sling, using front- and back-post stitches for the shell ridges.
- Difficulty
- Intermediate
Materials
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Stitches used: ch, sc, hdc, dc, tr, sl st
Seashell Cup Cozy — Shell Body & Net Holder Shell (worked in rows; front/back-post stitches make the shell ridges) Row 1: Ch 8, from 4th ch back: hdc, hdc-inc, 3-hdc-in-one (fw), hdc-inc, hdc-inc Row 2: ch 2, 8x (BP-hdc, ch), BP-hdc, dc Row 3: ch 2, 8x (FP-hdc, hdc), FP-hdc, dc Row 4: ch 2, 8x (BP-hdc, hdc), BP-hdc, dc Row 5: ch 2, 8x (FP-hdc, hdc-inc), FP-hdc, dc Row 6: ch, BP-dc, 2 dc, BP-hdc, 2 hdc, BP-hdc, hdc, sl st, 2x(BP-sl st, 2 sl st), BP-sl st, sl st, hdc, BP-hdc, 2 hdc, BP-hdc, 2 dc, BP-dc, sc Row 7: 8x (ch, FP-dc, ch, 2 sl st) Sides & base: 6 sc up the side; base = sl st, 2 ch, (3 dc), 3 dc-inc, (3 dc), 2 ch, sl st; 6 sc down the other side. Join the two shell halves with a round of sc, leaving an opening for the cup. Net Holder (bottom sling) Rnd 1-6: 9x (sc, ch 12, sl st into an appropriate st) to make the net; then 5 sc + hdc and 4 tr to finish.
Notes
Shell-shaped cup cozy using front/back-post hdc/dc for the ridges, plus a chain-net sling under the cup. f=hdc, t=dc, e=sl st, v=inc, fw=3-in-one; 内=back post, 外=front post.
Seashell Cup Cozy — Net-Top Symbol Chart (work in color order red -> yellow -> green) Base (red): a row of ch loops, then rounds of dc/tr posts separated by ch spaces, fanning outward to form the scalloped shell. Middle (red): dc-fan rounds with ch arches shaping the shell ridges. Top edge (yellow): a round of dc fans with ch picot loops making the scalloped rim. Accents (green): sc and dc worked at the base and sides to join/edge the piece. Follow the color order red -> yellow -> green as marked. Symbols: oval = ch, X = sc, T with bar = dc/tr, V = 2-in-one (inc).
Notes
Symbol chart for the shell/net top; worked in three color stages (red body, yellow scalloped rim, green edging).
Crochet Diagrams

Frequently asked questions
How are the shell ridges made?
By alternating front-post and back-post half-double crochets across the rows.