WEIGHT
Fleece weight refers to the loft and thickness of the material used in the jacket construction. The higher the number the higher the loft and warmth (weight). In general, there are three weights fleeces will come in:
100 Lightweight
200 Midweight
300 Heavyweight
A lightweight fleece is ideal for high output activities or as a mid-layer under another fleece or shell jacket on a moderately cold day. Lightweight fleeces are more breathable and provide adequate warmth for active pursuits.
Midweight fleeces are the most versatile, they can work well as an outer layer during cool temperatures but can also be incorporated into a layering system for cold days. Just like lightweight fleeces, these are highly breathable but benefit from extra insulation.
Heavyweight fleeces are the least versatile of the fleeces. They are generally less breathable and bulkier than lighter options. However, they work well as a standalone layer in cooler temperatures.
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