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HydroShield Thermal Base Layer
HydroShield Thermal Base Layer
Size guide
Size Guide (AU/UK)
| EU Size | UK/AU Size | Foot Length (cm) |
|---|---|---|
| 36 | 3.5 | 23.0 cm |
| 37 | 4 | 23.5 cm |
| 38 | 5 | 24.0 cm |
| 39 | 6 | 24.5 cm |
| 40 | 6.5 | 25.0 cm |
| 41 | 7 | 25.5 cm |
| 42 | 8 | 26.0 cm |
| 43 | 9 | 26.5 cm |
| 44 | 10 | 27.0 cm |
| 45 | 11 | 27.5 cm |
| 46 | 12 | 28.0 cm |
Fits true to size. If between sizes, we recommend sizing up.
Measure your chest and select the matching size. If between sizes, size up.
| Size | Chest (cm) |
|---|---|
| S | 88–96 |
| M | 96–104 |
| L | 104–112 |
| XL | 112–120 |
| 2XL | 120–128 |
| 3XL | 128–136 |
True to size (AU standard fit)
| Size | Bust (cm) | Length (cm) |
|---|---|---|
| XS | 82–86 | 60 |
| S | 87–91 | 62 |
| M | 92–96 | 64 |
| L | 97–102 | 66 |
| XL | 103–108 | 68 |
Stay Warm From the Inside Out.
The HydroShield Base Layer is built for cold, wet Australian days — thermal compression fabric that traps body heat, pulls sweat away from your skin, and moves with you all day long.
Most base layers leave you clammy by mid-morning. This one doesn't. Quick-dry polyester keeps you dry from the inside out, four-way stretch gives you full range of movement, and the thermal compression fit locks in warmth without the bulk.
Pairs perfectly with the HydroShield Waterproof Jacket for complete all-weather protection.
- Thermal compression fit — traps body heat without bulk.
- Quick-dry polyester — moves sweat away instantly. No clammy feeling.
- Four-way stretch — full range of movement all day long.
- Free shipping Australia + 30-day money-back guarantee + 30-day easy returns.
📏 Size Guide (cm)
| Size | Chest | Length | Sleeve |
|---|---|---|---|
| S | 78 | 61 | 51 |
| M | 82 | 63 | 53 |
| L | 86 | 65 | 55 |
| XL | 90 | 67 | 57 |
| XXL | 94 | 69 | 59 |
| XXXL | 98 | 71 | 61 |
If between sizes, size up for a more comfortable fit.
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HydroShield Thermal Base Layer

Frequently Asked Questions
We offer a 30-day return policy. Items must be unworn, unused and in original packaging to be eligible. If your item arrives damaged or defective, we'll sort it out immediately at no cost to you. For sizing questions before purchasing, check our size guide or contact us at hello@rayzerglobal.com
Each product page has a detailed size guide with exact measurements in centimetres. If you're between sizes, we recommend sizing up. Still unsure? Contact us and we'll help you choose.