Kingston Cap

Materials
Size I/5.5 mm crochet hook
4 ply yarn
Tapestry Needle

Chain 4, join

Round 1: Ch 1, pull up, *3 DC, CH 1, Work 6 times total from *. Work a single crochet, instead of the chain 1 to join. (6 Sets of Double Crochet with a chain 1)
Round 2: CH 1, Pull up, * Work 3DC, CH 1, 3 DC CH 1 in the same space and each space around, Complete 6 times total from * working a single crochet to join. ( 12 sets of 3 double crochet with chain 1 between)
Round 3: CH 1, Pull up, * Work 3DC, CH 1, in each chain 1 space around. Complete 12 times total from * working a single crochet to join. ( 12 sets of 3 double crochet with chain 1 between)
Round 4: CH 1, Pull up, *Work 3 DC, CH 1 in CH 1 space, Work 3 DC, CH 1, 3 DC CH 1 in the next chain 1 space. Continue around from *. work a single crochet to join. (18 sets of 3 DC, CH 1 total)

Round 5: CH 1, Pull up, *Work 3 DC, CH 1 in CH 1 space, Work 3 DC, CH 1, 3 DC CH 1 in the next chain 1 space, Work 3 DC, CH 1 in next CH 1 space,. Continue around from *. work a single crochet to join. (24 sets of 3 DC, CH 1 total)Round 6: CH 1, Pull up, in the same space *Work 2 sets of 3 DC, CH 1 in CH 1 space, work 1 set of 3 DC, CH 1 in each of the next 3 CH 1 spaces. Continue around, work a single crochet to join. (30 sets of 3 DC, CH 1 total)

Round 7-10: CH 1, Pull up, in the same space *Work 3 DC, CH 1 in each space around, work a single crochet to join. (30 sets of 3 DC, CH 1 total)

Round 11: CH 1, Pull up, Work 3 DC in each CH 1 space around, join with the beginning stitch. Do not chain 1 between.

Round 12: Work 1 DC, work a DC DEC, Continue around. This part can easily be adjusted for a larger or smaller head. Each double crochet decrease will count as 1 stitch. I have found that 60-70 stitches is the approximate amount of stitches for an adult size head. Try the cap on to see how close you are with the fit. If the cap is to small on the band, work less double crochet decreases. If the cap is to large, work more double crochet decreases. This is how you will modify the band to your custom fit.


Band:
Round 13-19: Work 1 SC in each stitch around. Do not join, work in a continual round. To finish off, skip 1 SC and SL ST in the next. Cut the yarn and sew in the tail.

Extra Increase Round: 
This will follow round 6.
CH 1, Pull up, in the same space *Work 2 sets of 3 DC, CH 1 in CH 1 space, work 1 set of 3 DC, CH 1 in each of the next 4 CH 1 spaces. Continue around, work a single crochet to join. (35 sets of 3 DC, CH 1 total)

After the extra increase round, you will continue for the length of the cap with rounds 7-10. You will be work 35 sets of double crochet instead of 30. Work rounds 11 and then 12. Round 12 goes in to details on how to decrease more and approximately how many stitches will work for an average adult size head. This estimate will be different when using a smaller hook and yarn.