Paul Doherty
GBAlways happy to use SIS products as to… Always happy to use SIS products as to support my training sessions and whilst competing in various events and also during recovery post exercise. Great choice of products and flavours.
Paul Buchheister
GBLike the product Like the product, works well for me. A little disappointed that currently only offered in one flavour hence a point off
Elisabeth Postma
NLDid not get my delivery yet Did not get my delivery yet. You order today deliver tomorow, now 1,5 week later still nothing
Eleni Mela
GRFriendly and efficient support team Friendly and efficient support team, ready to answer any of your questions and to help you.
Thomas Regan
GBSiS are the leaders in endurance… SiS are the leaders in endurance nutrition and it shows with their products and service.