Free Crochet Pattern – Easy Modern Bum Bag Tutorial

You can make this Oversized Crochet Bum Bag Pattern by making only SEVEN Modern Granny Squares and TWO half or triangle granny motifs! This beginner crochet tote bag is made with basic crochet stitches and easy seaming. Grab some worsted weight yarn, a crochet hook and starting this free crochet pattern to make this unique design in no time!

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Pattern Description

The perfect bum bag for summer is here. This will be your go-to oversized summer tote to take on all of your amazing beach trips, long walks and casual dinners out!

Although I have noted this as an intermediate skill level pattern it is definitely doable for a determined beginner crocheter!

Use stitch markers to mark the first stitch in the rounds on the modern granny squares so that you have the correct number of stitches on that side.

This bag crochet pattern uses a 4.50 mm crochet hook, be sure to check your gauge. If your gauge is off then your squares may pinch or be wavy making it difficult to seam the squares together.

This granny square bag is just the right size to fit all of you essentials and then some! Eighteen and a half inches wide and 9 and a half inches deep at the shallowest point, this crochet boho bag is the perfect size to wrap comfortably around your side. 

The strap for this crocheted bag is designed to be just long enough to keep the bag in a comfortable position on your body. You may adjust the shoulder strap to be longer or shorter to fit your preference. 

Get creative with you color choices. Even though I designed this pattern to use three colors this easy crochet pattern would look lovely in just a solid color too! Let your personal style shine!

Yarn Substitutes

• 24/7 Cotton
• Color Theory

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Materials

• Size 4.50 mm crochet hook                                             
• #4 Worsted Wt. Yarn
  Color A – 184 yards
  Color B – 184 yards
  Color C – 184 yards
• Sample Made Using: Local Grown Cotton Yarn  
  Color A – Terracotta [667-134S]
  Color B – Fisherman [667-098X]
  Color C – Army Green [667-174M]

Gauge

• 18 sts x 10 rows in hdc is 4 x 4 inches.

Sizing 

• One Size: 18.5” wide by 9.5” deep at shallowest point with a 28” shoulder strap.

Stitch Descriptions and Abbreviations

• Chain Stitch – ch
• Stitch(es) – st(s) 
• Slip Stitch – sl st
• Single Crochet – sc
• Half Double Crochet – hdc
• Double Crochet – dc
• Center Single Crochet – csc – To create a csc, you will work your stitch under the front and back loop between the two posts of the stitch. (Also known as the waistcoat stitch.)

Pattern Notes

• * Designates a repeat.  
• “sc 1” means to single crochet in the next stitch.
• “sc 2” means to single crochet in each of the next 2 stitches.
• “2 sc” means to single crochet twice in the next stitch to create an increase.
• No turns at the end of each Round on FULL Squares.
• Some Turns on Rows of Half Squares, check notes within pattern.

Free Bag Crochet Pattern – Make 7 Squares

Color A
Round 1 – Ch 4, *1 dc in 4th ch from hook, ch 1, repeat from * 6 more times, sl st to 3rd ch of starting ch-4 (counts as 1st dc). [8 dc, ch-1 sps]
Round 2 – Ch 1, sc in 1st ch-sp, *7 dc in next ch-1 sp, sc in next ch-1 sp, repeat from * 2 more times, 7 dc in last ch-1 sp, sl st to sc st. [(4) 7-dc shells, 4 sc]

Color B
Round 3  – Ch 4, (dc, ch 3, dc, ch 1, dc) in same st as join, *ch 5, skip 7-dc, (dc, ch 1, dc, ch 3, dc, ch 1, dc) in next sc, repeat from * 2 more times, ch 2, dc (counts as 3 chs) into 3rd ch of ch-4. [16 dc, (4) ch-5 sps, 4 ch-3 sps. 8 ch-1 sps]
Round 4  – Ch 2, 2 hdc around joining dc, *2 hdc in next ch-1 sp, (2 hdc, ch 2, 2 hdc) in ch-3 corner, 2 hdc in next ch-1 sp, 2 hdc in ch-5 sp, work 1 hdc over ch-5 and into center dc of 7dc cluster, 2 hdc in ch-5 sp, repeat from * 2 more times, 2 hdc in next ch-1 sp, (2 hdc, ch 2, 2 hdc) in ch-3 corner, 2 hdc in last ch-1 sp, 2 hdc in ch-2 sp, work 1 hdc over ch-2 sp and into center dc of 7dc cluster, sl st to ch 2. [13 total hdc sts each side]
Round 5 – Ch 2, hdc same st as join, *hdc to corner, (2 hdc, ch 2, 2 hdc) in ch-2 corner, repeat from * around to final side, hdc to first st, sl st to first hdc, finish off. [17 hdc each side]
Round 6  – Ch 2, hdc same st as join, *hdc to corner, 5 hdc in ch-2 corner, repeat from * around to final side, hdc to first st, sl st to first hdc, finish off. [17 hdc each side + 5 hdc in each corner]

Color A
Round 7 – Attach yarn in any hdc stitch and work with right side facing, ch 1, *sc to 5-hdc corner placing 3 sc in center st of 5-hdc, repeat from * around to final side, sc to first st, sl st to first sc, finish off. [96 sc sts total]

Color C
Round 8 – Attach yarn in any sc stitch  and work with right side facing, ch 2, *hdc to 3-sc corner placing 3 hdc in center st of 3-sc, repeat from * around to final side, hdc to first st, sl st to first hdc.
[104 hdc sts total]
Round 9 – Ch 2, hdc same st as join, *hdc to 3-hdc corner placing 3 hdc in center st of 3-hdc, repeat from * around to final side, hdc to first st, sl st to first hdc. [112 hdc sts total]

Make 2 Half Squares (Granny Triangles)

Color A
Row 1 – Ch 4 (counts as 1st dc), *1 dc in 4th ch from hook, ch 1, repeat from * 4 more times, turn. [6 dc, (5) ch-1 sps]
Row 2 – Ch 1, sc in 1st ch-sp, *7 dc in next ch-1 sp, sc in next ch-1 sp, repeat from * 1 more time, finish off. [(2) 7-dc shells, 3 sc]

Color B
Row 3  – Reattach yarn in sc of Row 2, ch 4 (counts as 1st dc), (dc, ch 1, dc) same st as join, *ch 5, skip 7-dc, (dc, ch 1, dc, ch 3, dc, ch 1, dc) in next sc, ch 5, skip 7-dc, (dc, ch 1, dc, ch 1, dc) in last sc, ch 2, turn.
[10 dc, (2) ch-5 sps, (1) ch-3 sp, (6) ch-1 sps]
Row 4  – Hdc in first st, 2 hdc in ch-1 sp, 2 hdc in next ch-1 sp, 2 hdc in ch-5 sp, work 1 hdc over ch-5 and into center dc of 7dc cluster, 2 hdc in ch-5 sp, 2 hdc in ch-1 sp, (2 hdc, ch 2, 2 hdc) in ch-3 corner, 2 hdc in ch-1 sp, 2 hdc in ch-5 sp, work 1 hdc over ch-5 and into center dc of 7dc cluster, 2 hdc in ch-5 sp, (2 hdc) in each next ch-1 sp, hdc in ch-4, ch 2 turn. [14 hdc sts each side]
Row 5 – 2 hdc in first st, hdc to corner, (2 hdc, ch 2, 2 hdc) in ch-2 corner, hdc to last st. 2 hdc in last st, ch 2, turn. [16 hdc each side]
Row 6  – 2 hdc in first st, hdc to corner, 5 hdc in ch-2 corner, hdc to last st, 2 hdc in last st, finish off. [39 hdc sts total]

Color A
Row 7 – Attach yarn in the first st of Row 6 so you can work with the right side facing, ch 1, 2 sc in first st, sc to 5-hdc corner placing 3 sc in center st of 5-hdc, sc to last st, 2 sc in last st, finish off. [43 sc sts total]

Color C
Row 8 – Attach yarn in the last st of Row 7 so you can work with the wrong side facing, ch 2, 2 hdc in first st, hdc to 3-sc corner placing 3 hdc in center st of 3-sc, hdc to last st, 2 hdc in last st, turn.
[47 hdc sts total]
Row 9 – Ch 2, 2 hdc in first st, hdc to 3-hdc corner placing 3 hdc in center st of 3-hdc, hdc to last st, 2 hdc in last st, finish off. [51 hdc sts total]

Assembly

1. Lay your squares like the photo labeled  “Assembly Diagram” below and begin seaming them together using a flat zipper seam with Color C.
2. A flat zipper seam is created by picking up the back loop of corresponding stitch on the squares next to each other, drawing up your yarn and creating a slip stitch.
3. Once all of your squares are seamed together, fold your bag panel in half at the horizontal line in the photo below. This will create the base or bottom of the bag.
4. Then fold the 2 squares on the two vertical lines in half to become part of the back.
5. Continue with your flat zipper seams to complete the back of your bag.
6. Once your squares are all seamed together, using Color C, reattach your yarn in any sc space in the opening of the bag.
7. With right sides facing, sc evenly around placing sc3tog where 3 squares meet and 3 sc in the tallest point of the bag opening (where straps will be placed).
8. Once you have worked around all sides, sl st to your first sc, ch-1 and work 1 sc in each st, place 3 sc in the center st of previous 3-sc and sc3tog where 3 squares meet again. 

Strap

Color A
Row 1 – Ch 6, sc in the 2nd ch from the hook, sc in each chain, turn.
Row 2 – Csc in each stitch across, turn.
Rows 3 to 50 – Repeat Row 2, finish off. 
Using Color B, surface slip stitch your strap to the highest points of your bag.

Check out more of my free modern crochet bag patterns!