Guides

Short, sourced answers to the questions behind the numbers.

Backpack Volume vs Base Weight: Litres by Trip LengthHow many litres of pack you need per night from Osprey, Gregory and Gossamer Gear, and why a lighter base weight buys a smaller pack. Bike Size by Height and Inseam: Reading Brand ChartsHow bike size charts map rider height to frame size, why the spans overlap, and how inseam and stand-over settle a between-sizes call. How Ski Length Changes With Ability: Three Charts ComparedHow much shorter a beginner's skis are than an expert's, read from evo, K2 and Faction size charts, with worked examples by height. Kayak Weight Capacity: How Much Room to Leave for GearWhy a kayak rated for your weight is not enough: the 70% rule, the 25-50% rule and Old Town's usable capacity, with worked examples. Snowboard Width and Boot Size: When You Need a Wide BoardWhich boot size needs a wide snowboard, from the Jones, Never Summer and Burton rules, with the minimum waist width by men's US size.