The Apple Watch Band. Trail Loop (49mm). Blue/Black Version (M/L) Medium / Large for Apple Watch Ultra.

Features:

• The thin, lightweight Trail Loop is made from a soft double-layer nylon weave, with a convenient pull tab for quick adjustments on the go.
• The Trail Loop, Alpine Loop, and Ocean Band are designed for Apple Watch Ultra and pair best with the 49mm case size. The bands are also compatible with 44mm and 45mm cases.
• Medium/Large Bands fits 145-220mm wrists