"The SISU 1.6™Junior Mouth Guard is perfect for team sports like Basketball, Handball, Football, Floorball, Hockey, Ice Hockey and Roller Derby, where communication, comfort, and protection are key.
Using revolutionary Diffusix™ technology, SISU mouthguards are 8 times tougher and 30-50% stronger than conventional mouthguards. You’ll be able to start each game with confidence knowing that no matter how hard you hit, your SISU is there to protect you.
A mouthguard shouldn’t be something you dread having to wear because it’s uncomfortable. In contrast to the large, clunky guards you’ve come to expect, every SISU is a super-slim 1.6-2.4 mm thin. They’re so small that you’ll honestly forget you’re even wearing a mouthguard!
SISU provides a comfortable custom fit that allows you to keep your guard in your mouth the entire game or practice. You don't need to constantly remove your guard to talk, breathe or drink. This means that fewer germs will be transferred from your dirty, sweaty hands to your SISU Guard.
SISU is the mouthgaurd that allows you to adjust over time, maintaining utmost comfort and protection. Beyond custom fitting, every SISU mouthguard can be remolded to ensure the best fit. Simply place your SISU Guard back in hot water, and it becomes soft and pliable, and ready to remold.
Mouthguards shouldn’t get in the way of your game, which is why every SISU is roughly half the thickness of conventional guards. When you wear a SISU, talking, breathing, and drinking are largely unobstructed, allowing you to keep your focus where it matters: on the next big play.
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(Valid from 26.5.2025)
Products are sold by MJP Group Oy (Business ID FI2643976-7). We sell to adults (18 +) and businesses worldwide.
For customers inside the EU/EEA all prices include Finnish value-added tax (VAT):
• standard 25,5 %
• reduced 14 %
Orders delivered outside the EU/EEA are supplied tax-free (0 % VAT). Local customs duties, taxes and import fees are the buyer’s responsibility.
EU business customers with a valid VAT number may request reverse-charge invoicing — e-mail us at sportheavy@sportheavy.fi.
A valid e-mail address, phone number and delivery address are required. Placing an order means you accept the terms in force on that date. You will receive an order-confirmation e-mail listing the goods, delivery costs and total price. Our logistics partner will notify you by e-mail, phone call or SMS when the parcel is ready for dispatch or pick-up.
Paytrail Plc (business ID 2122839-7) acts as the collecting payment service provider and will appear as the payee on your card or bank statement. The payment is forwarded immediately to MJP Group Oy. Paytrail is an authorised payment institution supervised by the Finnish Financial Supervisory Authority.
Paytrail Plc
Innova 2, Lutakonaukio 7
40100 Jyväskylä, Finland
Tel. +358 207 181 830
www.paytrail.com
PayPal (Europe) S.à r.l. et Cie, S.C.A. provides PayPal payments. It is a Luxembourg-registered credit institution authorised and supervised by the Commission de Surveillance du Secteur Financier (CSSF). PayPal appears as the payee on your PayPal account or card statement and settles the funds to MJP Group Oy.
PayPal (Europe) S.à r.l. et Cie, S.C.A.
22-24 Boulevard Royal
L-2449 Luxembourg
Trade Register: R.C.S. Luxembourg B 118 349
www.paypal.com
Shipping methods and costs are shown on the checkout page after you have selected the destination country.
You may return or exchange any non-food product within 14 days of delivery. Items must be unused, in their original packaging with all tags and factory protective films intact. Include a completed return form. After inspection we refund the product price; shipping fees are not refunded.
If you are outside Finland, you must ship the return yourself to the address listed on the return form.
Custom-made items (e.g. personalised name tags, custom blade profiling) are non-refundable.
Need help? Contact us at sportheavy@sportheavy.fi. If a parcel or product is damaged, photograph the damage, keep the packaging and notify us immediately so we can file a claim with the carrier.
We reserve the right to modify these terms at any time. Please read the current terms before ordering.
MJP Group Oy handles all customer data confidentially and will not disclose it to third parties except as required for payment processing or delivery.