Alpinestars Sierra Short Sleeve Jersey - S - Royal Blue - Bright Blue YGroup_7033682362413 The guide is extremely easy

The guide is extremely easy to install and only requires a 4mm Allen key

Kids unisize (49-56 cm)

100% free of BPA

Medium: 216mm | 90g

Alpinestars Sierra Short Sleeve Jersey - S - Royal Blue - Bright Blue YGroup_7033682362413 The guide is extremely easyThis short sleeved jersey is constructed from an innovative, advanced double poly knit fabric which is highly stretchable to allow for a performance fit. The Poly knit fabric main shell promotes moisture wicking, temperature control and prevents build up of sweat and the low open collar provides ease of entry and riding comfort. Extended open mesh inserts on sides provide enhanced breathability and airflow and the elongated lower back profile helps