If you’re looking for a lively and practical crochet project, a Colorful Knitted 3D Backpack Bag is the perfect idea! This eye-catching and functional bag can be your go-to for outings, festivals, or simply to add a handmade touch to your wardrobe. Best of all, itβs easier than it looks β ideal for crocheters who want to create something unique and fun.

π§Ά Materials Needed
- Assorted colorful worsted weight yarns (or cotton yarn)
- Crochet hook size 4.0 mm β 5.0 mm (depending on yarn thickness)
- Yarn needle
- Scissors
- Stitch markers
- Cord for drawstring or crochet your own
- Optional: Lining fabric for extra sturdiness
π Abbreviations (US Terms)
- CH β Chain
- SC β Single Crochet
- DC β Double Crochet
- TR β Treble Crochet
- SL ST β Slip Stitch
- ST β Stitch

π Pattern Overview
This backpack bag features small colorful “3D bubbles” or “puffs” that give the bag a cheerful and textured appearance. Youβll crochet multiple 3D motifs or puffy rounds and join them together to form the bag.
π§΅ How to Crochet It Step-by-Step
Step 1: Create the Base
- With a neutral or darker yarn, CH 5 and SL ST into the first CH to form a ring.
- Work SC or HDC in the round, increasing evenly to form a flat circular base.
- Make the base as big as you want the bottom of your backpack to be (typically 6β8 inches across).

Step 2: Make 3D Puffy Motifs
- Using bright colors, crochet small puff stitch circles or 3D motifs:
- CH 4, SL ST to form a ring.
- Into the ring, work several puff stitches (e.g., yarn over, pull through loops 3-4 times before pulling through all loops at once) separated by CH 1.
- Fasten off and weave in ends.
Step 3: Build the Bag Body
- Attach motifs together using SL ST or SC stitches, forming a continuous fabric.
- Alternatively, crochet the motifs directly onto the previous one as you go.

Step 4: Top of the Bag
- Once your bag reaches the desired height, SC around the top edge for stability.
- Add CH spaces to insert a drawstring: SC 5, CH 1, skip 1 ST, repeat around.
Step 5: Create and Insert the Drawstring
- Crochet a long chain (around 100-120 chains) and SC along it to make it thicker.
- Weave the drawstring through the CH spaces at the top.
Step 6: Add Straps
- Crochet two long sturdy straps (using rows of SC or HDC).
- Attach them securely to the back of the bag.

π¨ Color and Style Ideas
- Use rainbow colors for a vibrant look.
- Stick to two colors for a more sophisticated style.
- Combine solid motifs with multicolored yarns for a fun, bohemian vibe.
π Tips for Success
- Keep your tension even so the bag holds its shape.
- Reinforce the strap attachment areas with extra stitches.
- If you want more durability, sew a fabric lining inside the bag.

β¨ Conclusion
Creating a Colorful 3D Crochet Backpack is a joyful project that results in a functional and fashionable accessory. Whether you use it for daily adventures, beach trips, or as a special gift, this backpack will surely stand out. Plus, making all those little colorful motifs is incredibly fun and satisfying!
Video tutorial:
Grab your favorite yarns and start crocheting a masterpiece today! π§Άππ