Abbreviations: ch = chain, dc = double crochet, ea = each, rnd = round, sc = single crochet, sl st = slip stitch, sp = space, st = stitch, sts = stitches
Materials: worsted weight yarn, US size H hook. small amounts of yellow and orange, about 1/8 oz. blue multicolor or a shade of blue. If you are planning to use this for summer wear or for an exercise sweat band, use cotton yarn.
Back Loop Only - Instructions link, with photos: back loop how-to
Sun Starting Chain: ch 6, join with sl st to form a ring.
Sun Rnd 1: 8 sc in ring, sl st in back loop of first sc.
Sun Rnd 2: (chain loops round) * ch 4, skip next sc, sc in back loop of next sc **, repeat the directions between * and ** 3 more times. Note: It is important to crochet in the back loop only where indicated or there will not be front loops left unworked in which to crochet the next round.
Keep the loops that were made in Rnd 2 behind the other rounds, while working the rest of the sun rounds. These chain loops will be used later to attach the background to the sun shape.
Sun Rnd 3: sc in front loop of next sc, (2 sc in front loop of next sc) 8 times, sl st in back loop of first sc of this round (this sl st is made in the back loop in order to get the right look on the end of this round, to match the look of the next round).
Sun Rnd 4 (Points of Sun): * ch 3, sl st in 2nd ch from hook (for a picot), ch 2, (sl st in back loop of next sc) twice **, repeat the directions between * and ** 8 more times. End off yellow. Weave in ends on back of sun.
Orange Accent Rnd on Sun: Attach orange in any remaining loop of Rnd 4, sl st in ea remaining front loop around Rnd 4, then sl st back in loop where orange yarn was attached. End off. Weave in ends on back.
Background Rnd 1: Attach blue multicolor in any ch-4 loop on the back of the sun (the chain loops that were made in Sun Rnd 2). ch 3, (2 dc, ch 3, 3 dc) in the same ch-4 sp, * ch 2, (3 dc, ch 3, 3 dc) in next ch-4 sp, ** repeat the directions between * and ** twice more, then ch 2, sl st in the top of the first ch-3 of this rnd.
Background Rnd 2: ch 1, sc in next dc of background, sl st in picot loop of next point of sun, 3 sc in corner ch-3 sp of background, sc in ea of next 3 dc of background, 2 sc in next ch-2 sp of background, sc in next dc of background, skipping one sun point, sl st in picot loop on next point of sun, skip dc behind sun point, sc in next dc of background, 3 sc in next ch-3 corner sp of background, sc in ea of next 3 dc of background, 2 sc in next ch-2 sp of background, sc in next dc of background, skipping next 2 points of sun, sl st in picot loop of next point of sun, sc in the dc of background nearest next ch-3 corner, then make 3 sc in ch-3 corner sp of background, sc in ea of next 3 dc of background, 2 sc in next ch-2 sp of background, sc in next dc of background, skipping one point of sun, sl st in picot loop of next point of sun, skip one dc of background, sc in next dc of background (which is the dc nearest the ch-3 corner), 3 sc in ch-3 corner sp of background, sc in ea of next 3 dc of background, 2 sc in ch-2 of background, sl st in first sc of this rnd.
Next: sl st in ea of next 4 sc (to reach the stitch where the stretch rows will begin along the next side).
Stretch Row 1 of Band: ch 2, sc in back loop only of next sc, sc in back loop only of ea of next 10 sc.
Stretch Row 2 of Band: ch 1, turn, sc in back loop only of ea of 11 sc across.
Additional Stretch Rows of Band: Repeat Stretch Row 2 of Band until you have the length needed to fit the wrist of the person who will be wearing the band. To fit my wrist (average adult female wrist), I crocheted 13 stretch rows for the band (with worsted weight yarn; if you use a different weight of yarn, the number of rows will differ more).
Finishing: Join the last row made of the band to the opposite side of the background (with your preferred method of joining, crocheted together with slip stitch or sewn together with yarn and a large-eye sewing needle).
Button Accent: Sew or glue a button over the center hole of the sun. The button makes a big difference in the final look of the wrist band. For a photo showing four different buttons used on this wrist band, see http://crochet.about.com/od/accessories/ss/sunwb4pics.htm