Science in Sport (SiS) (www.scienceinsport.com) has a 4.2 out of 5 rating on OK.one, based on 201 user reviews collected here. It is listed under Sports and its reputation is good. 78% of reviews are 4 stars or higher and 14% are 1 star; The business has replied to 85% of negative reviews. Last updated 2026-08-10.
我在订购时遇到了问题，但客户服务非常棒，很快就解决了我的问题。 然而，我的包裹在我被告知的预计日期几天后才送达，这意味着我无法带着我的凝胶和能量咀嚼物去参加大型比赛，这真是太遗憾了，我知道这可能是快递公司的错，而不是 SiS。
Hi there, We are glad our customer service team could assist you with your order. We understand your frustration regarding the delayed delivery and the impact it had on your competition preparations. We are always working to improve our delivery processes and appreciate your feedback. Kind regards Team SiS
绝对觉得它对我有帮助，很容易混合，我也喜欢它的味道。
Hi Steve, We're delighted to hear that you find our product helpful and easy to prepare. It's wonderful to know that you also enjoy the taste! Thank you for sharing your positive experience. Kind regards Team SiS
Hi Stuart, We're glad that you enjoy our products! Kind regards Team SiS
很棒的水瓶。发货很快，我每天都使用它们。
Hi Sam, We're so happy to hear you're enjoying the water bottles and appreciate your kind words about our quick shipping! We're glad they're a part of your daily routine. Kind regards Team SiS
快速高效的服务，轻松的订购和订阅服务。 也很棒的产品。
Hi Linda, We're so pleased to hear that you found our service fast and efficient, and that our ordering and subscription process was easy for you. We're also delighted that you enjoy our products! Kind regards Team SiS
订阅服务很好，但如果它能够反映我的数量使用情况并且能够整合交付，那就太好了
Hi there, We appreciate your feedback on our subscription service. We understand your desire for usage-based quantity reflection and consolidated deliveries. We are always looking for ways to improve our services and will certainly consider these suggestions. Kind regards Team SiS
我订购了第二天送货，花了近 7 个工作日才到达。
Hi Thomas, We sincerely regret the significant delay in your delivery. We are actively investigating this issue to prevent future occurrences. Kind regards Team SiS
非常方便的系统，使我能够制定自己的交货时间表，这很棒。产品一流，质量稳定。
Hi David, We're so pleased to hear that our system is convenient for you and that you appreciate the consistent quality of our products. Thank you for your positive feedback! Kind regards Team SiS
非常及时的调度和送货服务。干得好。
Hi Tom, We are so pleased to hear that you experienced such prompt dispatch and delivery. Thank you for taking the time to share your positive feedback with us. Kind regards Team SiS
一盒凝胶在供应过程中被损坏，其中一根凝胶棒被切开并泄漏到整个盒子上。 虽然有点可惜，但 SIS 产品仍然是我的最爱
Hi there, We are truly sorry to hear about the damaged gel box and the leaked product. Unfortunately as this is the first time we've heard of this issue, we haven't been able to resolve this for you. While we appreciate your feedback, we always encourage customers to contact our Customer Service team before leaving a review. A member of our team will be in touch shortly. Kind regards Team SiS
Good products. Easy on the stomach
Hi Gareth, We're so glad to hear that our products are gentle and effective for you. Thank you for your wonderful feedback! Kind regards Team SiS
Absolutely terrible experience. I ordered from SIS Sport specifically for my training prep, and it has been a total disaster. First of all, I still haven’t received my order. They claim they tried to deliver, but nobody ever came to my house, and they never called me. I’ve been stuck waiting around for nothing, and because of their complete failure to deliver, I’ve had to miss my scheduled training sessions. To make matters worse, their customer support is utterly useless. I contacted them to resolve this, and they did absolutely nothing to fix the issue. When I requested a refund for the delivery costs—considering they failed to actually deliver anything—they completely ignored my request. Unprofessional, unreliable, and terrible customer service. If you actually need your sports nutrition/gear on time for your training, do yourself a favor and buy from someone else. I want my money back. The 14/07/2026 Italy. No delivery till today
Hi Aymen, Thank you for your feedback. We're sorry to hear that you feel disappointed with your experience. To provide some context, you first contacted us two days after placing your order, at which point we provided the tracking information and advised of the 5–7 working day delivery timeframe for deliveries to Italy, as stated on our website. You subsequently requested that the courier contact you before delivery. We explained that we could pass this request on, but unfortunately we cannot guarantee that a courier will call before attempting delivery, as this is not standard practice unless there is an issue with the delivery. When you contacted us again requesting a refund, we reviewed the tracking and could see that the courier had recorded failed delivery attempts. We provided the tracking details again, advised that a further delivery attempt would be made, and explained that as the parcel was still within the estimated delivery timeframe, we were unable to issue a refund at that stage. We would also like to clarify that none of your emails have been ignored. We have responded throughout, explained the situation as updates became available, and provided contact details for the local depot should you wish to discuss delivery arrangements directly with the courier. Following our latest review today, we have refunded your delivery charge as a gesture of goodwill. As there has still been no further tracking update, we have also offered either a replacement order or a full refund, depending on your preference. We apologise for the inconvenience caused and remain happy to assist in resolving this matter. Kind regards Team SiS
I have been using science in sport over a large period of time now. This brand supports me in my training therefore is my no. 1 go to brand in terms of fuelling.
Hi Michael, We're so glad to hear that our brand consistently supports your training and remains your top choice for fuelling. We truly appreciate your loyalty and positive feedback! Kind regards Team SiS
After ten days mail arrived to leave a review. Unfortunately I did not get any update yet from the store, I just paid and got confirmation, then nothing for ten days. I believe it will finaly arrive, but this is a second time same experience, so I wouldn’t recommend to shop there, they’re getting worse and worse…
Hi Lukas, We appreciate you sharing your experience and feedback regarding the delay in receiving updates on your order. We'll contact you personally to look into the matter further. Kind regards, Team SiS
I placed my order on June 28, with an estimated delivery date between July 1 and July 3. Apart from the initial order confirmation, I never received any further updates. Since there is no customer service phone number, I had to contact support through the chatbot and email. Despite their claim that they reply within 24 hours, I received my first response after more than 24 hours. After several emails back and forth, it became clear that my order had most likely been lost, as there was no record of it ever being dispatched. On July 7, customer service told me they would send a replacement order via express delivery. Today is July 13, and I still haven’t received anything. I have not been sent a tracking number or any confirmation that the replacement order has even been shipped. Overall, this has been a very disappointing experience. The communication was slow and frustrating, and I was left without any proactive updates. We’ll see how this eventually turns out, but so far my experience has been very poor.
Hi Matej, We are truly sorry to hear about the experience you've had with your recent order. We understand your disappointment regarding the lack of updates, and the delay with the express delivery for your replacement order. We can see that your enquiries have been responded to by our team and a resolution was provided yesterday. If we can help with anything further, please feel welcome o respond to the email chain and we'll be happy to help further. Kind regards Team SiS
Excellent gels these.
Hi there, We're glad you enjoyed our product so much! Your positive feedback truly means a lot to us. Kind regards Team SiS
really good.so fast
Hi there, We're so happy to hear you enjoyed our service and found it to be fast. We appreciate your positive feedback! Kind regards Team SiS
Hi Stephen, We're so happy to hear you consistently receive excellent service! We truly appreciate your wonderful 5-star feedback. Kind regards Team SiS
Hi Peter, We're absolutely thrilled you enjoyed our product so much! Your positive feedback truly means a lot to us. Kind regards Team SiS
Used for over a year for work and training on he bike.
Hi there, We're glad to hear our product has been a consistent part of your work and training routine for over a year. We appreciate your feedback. Kind regards Team SiS
201 reviews matching