There are no right or wrong answers when choosing the fuelling formats that work for you. Personal preference and practical considerations will play strong roles in your decision-making process.
A sample pack does what is says- you get to try all of the Precision products and see what works best for you!
The pack contains 1 x PF 90 Gel, 2 x PF 30 Gels, 1 x PF 30 Caffeine Gel, 2 x Mint & Lemon PF 30 Chew, 1 x Tube of PH1000 Hydration Tablets and 1 bag of Carb & Electrolyte Drink Mix.