patagonia women's chacabuco backpack 32L Pack – Tailored in both size and fit for a woman’s torso Patagonia Chacabuco 30-liter Backpack -

Wear heat-retaining layers to stay warm in the chilly water

For those seeking an entry-level option that allows access to this worldwide phenomenon, the Garmin eTrex SE is a solid consideration, thanks to its accuracy and battery life, that's available for a more affordable price

For a teenager that was a lot of money, and I used this pack for over ten years until I lost it in an accident (possibly I repeat this story every year anew?)

Different people's needs also differ for example with clothing sizing or whether you prefer feeling hot or cold, but as a rough guide: If you are out on a day's walk in the UK unless it is winter conditions, 25 to 40 litres is probably your ideal size